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<center><a href="https://gitlab.com/petsc/petsc/-/blob/966382dc56242773704ef5f5cee7aa2db3ebc577/include/petscsnes.h">Actual source code: petscsnes.h</a></center><br>
<html>
<head>
<title></title>
<meta name="generator" content="c2html 0.9.6">
<meta name="date" content="2025-04-30T18:14:50+00:00">
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<body bgcolor="#FFFFFF">
<pre width=80>
<a name="line1"> 1: </a><font color="#B22222">/*</font>
<a name="line2"> 2: </a><font color="#B22222"> User interface for the nonlinear solvers package.</font>
<a name="line3"> 3: </a><font color="#B22222">*/</font>
<a name="line4"> 4: </a><font color="#A020F0">#pragma once</font>
<a name="line6"> 6: </a>#include <A href="../include/petscksp.h.html"><petscksp.h></A>
<a name="line7"> 7: </a>#include <A href="../include/petscdmtypes.h.html"><petscdmtypes.h></A>
<a name="line8"> 8: </a>#include <A href="../include/petscfvtypes.h.html"><petscfvtypes.h></A>
<a name="line9"> 9: </a>#include <A href="../include/petscdmdatypes.h.html"><petscdmdatypes.h></A>
<a name="line10"> 10: </a>#include <A href="../include/petscsnestypes.h.html"><petscsnestypes.h></A>
<a name="line12"> 12: </a><font color="#B22222">/* SUBMANSEC = <a href="../manualpages/SNES/SNES.html">SNES</a> */</font>
<a name="line14"> 14: </a><font color="#B22222">/*J</font>
<a name="line15"> 15: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESType.html">SNESType</a> - String with the name of a PETSc `<a href="../manualpages/SNES/SNES.html">SNES</a>` method. These are all the nonlinear solvers that PETSc provides.</font>
<a name="line17"> 17: </a><font color="#B22222"> Level: beginner</font>
<a name="line19"> 19: </a><font color="#B22222"> Note:</font>
<a name="line20"> 20: </a><font color="#B22222"> Use `<a href="../manualpages/SNES/SNESSetType.html">SNESSetType</a>()` or the options database key `-snes_type` to set the specific nonlinear solver algorithm to use with a given `<a href="../manualpages/SNES/SNES.html">SNES</a>` object</font>
<a name="line22"> 22: </a><font color="#B22222">.seealso: [](doc_nonlinsolve), [](ch_snes), `<a href="../manualpages/SNES/SNESSetType.html">SNESSetType</a>()`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESCreate.html">SNESCreate</a>()`, `<a href="../manualpages/SNES/SNESDestroy.html">SNESDestroy</a>()`, `<a href="../manualpages/SNES/SNESSetFromOptions.html">SNESSetFromOptions</a>()`</font>
<a name="line23"> 23: </a><font color="#B22222">J*/</font>
<a name="line24"> 24: </a><font color="#4169E1">typedef const char *<a href="../manualpages/SNES/SNESType.html">SNESType</a>;</font>
<a name="line25"> 25: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNEWTONLS.html">SNESNEWTONLS</a> </font><font color="#666666">"newtonls"</font><font color="#228B22"></font></strong>
<a name="line26"> 26: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNEWTONTR.html">SNESNEWTONTR</a> </font><font color="#666666">"newtontr"</font><font color="#228B22"></font></strong>
<a name="line27"> 27: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNEWTONTRDC.html">SNESNEWTONTRDC</a> </font><font color="#666666">"newtontrdc"</font><font color="#228B22"></font></strong>
<a name="line28"> 28: </a><strong><font color="#228B22">#define SNESPYTHON </font><font color="#666666">"python"</font><font color="#228B22"></font></strong>
<a name="line29"> 29: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNRICHARDSON.html">SNESNRICHARDSON</a> </font><font color="#666666">"nrichardson"</font><font color="#228B22"></font></strong>
<a name="line30"> 30: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESKSPONLY.html">SNESKSPONLY</a> </font><font color="#666666">"ksponly"</font><font color="#228B22"></font></strong>
<a name="line31"> 31: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESKSPTRANSPOSEONLY.html">SNESKSPTRANSPOSEONLY</a> </font><font color="#666666">"ksptransposeonly"</font><font color="#228B22"></font></strong>
<a name="line32"> 32: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESVINEWTONRSLS.html">SNESVINEWTONRSLS</a> </font><font color="#666666">"vinewtonrsls"</font><font color="#228B22"></font></strong>
<a name="line33"> 33: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESVINEWTONSSLS.html">SNESVINEWTONSSLS</a> </font><font color="#666666">"vinewtonssls"</font><font color="#228B22"></font></strong>
<a name="line34"> 34: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNGMRES.html">SNESNGMRES</a> </font><font color="#666666">"ngmres"</font><font color="#228B22"></font></strong>
<a name="line35"> 35: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESQN.html">SNESQN</a> </font><font color="#666666">"qn"</font><font color="#228B22"></font></strong>
<a name="line36"> 36: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESSHELL.html">SNESSHELL</a> </font><font color="#666666">"shell"</font><font color="#228B22"></font></strong>
<a name="line37"> 37: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNGS.html">SNESNGS</a> </font><font color="#666666">"ngs"</font><font color="#228B22"></font></strong>
<a name="line38"> 38: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNCG.html">SNESNCG</a> </font><font color="#666666">"ncg"</font><font color="#228B22"></font></strong>
<a name="line39"> 39: </a><strong><font color="#228B22">#define <a href="../manualpages/SNESFAS/SNESFAS.html">SNESFAS</a> </font><font color="#666666">"fas"</font><font color="#228B22"></font></strong>
<a name="line40"> 40: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESMS.html">SNESMS</a> </font><font color="#666666">"ms"</font><font color="#228B22"></font></strong>
<a name="line41"> 41: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNASM.html">SNESNASM</a> </font><font color="#666666">"nasm"</font><font color="#228B22"></font></strong>
<a name="line42"> 42: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESANDERSON.html">SNESANDERSON</a> </font><font color="#666666">"anderson"</font><font color="#228B22"></font></strong>
<a name="line43"> 43: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESASPIN.html">SNESASPIN</a> </font><font color="#666666">"aspin"</font><font color="#228B22"></font></strong>
<a name="line44"> 44: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESCOMPOSITE.html">SNESCOMPOSITE</a> </font><font color="#666666">"composite"</font><font color="#228B22"></font></strong>
<a name="line45"> 45: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESPATCH.html">SNESPATCH</a> </font><font color="#666666">"patch"</font><font color="#228B22"></font></strong>
<a name="line46"> 46: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESNEWTONAL.html">SNESNEWTONAL</a> </font><font color="#666666">"newtonal"</font><font color="#228B22"></font></strong>
<a name="line48"> 48: </a><font color="#B22222">/* Logging support */</font>
<a name="line49"> 49: </a>PETSC_EXTERN <a href="../manualpages/Sys/PetscClassId.html">PetscClassId</a> SNES_CLASSID;
<a name="line50"> 50: </a>PETSC_EXTERN <a href="../manualpages/Sys/PetscClassId.html">PetscClassId</a> DMSNES_CLASSID;
<a name="line52"> 52: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESInitializePackage.html">SNESInitializePackage</a>(void)</font></strong>;
<a name="line53"> 53: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESFinalizePackage.html">SNESFinalizePackage</a>(void)</font></strong>;
<a name="line55"> 55: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCreate.html">SNESCreate</a>(<a href="../manualpages/Sys/MPI_Comm.html">MPI_Comm</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line56"> 56: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESParametersInitialize.html">SNESParametersInitialize</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line57"> 57: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESReset.html">SNESReset</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line58"> 58: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESDestroy.html">SNESDestroy</a>(<a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line59"> 59: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetType.html">SNESSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESType.html">SNESType</a>)</font></strong>;
<a name="line60"> 60: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitor.html">SNESMonitor</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line61"> 61: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSet.html">SNESMonitorSet</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, void *), void *, <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line62"> 62: </a><strong><font color="#4169E1"><a name="SNESMonitorSetFromOptions"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSetFromOptions.html">SNESMonitorSetFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[], const char[], const char[], <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *), <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, PetscViewerAndFormat *)</font></strong>);
<a name="line63"> 63: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorCancel.html">SNESMonitorCancel</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line64"> 64: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSAWs.html">SNESMonitorSAWs</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, void *)</font></strong>;
<a name="line65"> 65: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSAWsCreate.html">SNESMonitorSAWsCreate</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, void **)</font></strong>;
<a name="line66"> 66: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSAWsDestroy.html">SNESMonitorSAWsDestroy</a>(void **)</font></strong>;
<a name="line67"> 67: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetConvergenceHistory.html">SNESSetConvergenceHistory</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>[], <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>[], <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line68"> 68: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetConvergenceHistory.html">SNESGetConvergenceHistory</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *[], <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *[], <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line69"> 69: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetUp.html">SNESSetUp</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line70"> 70: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line71"> 71: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetErrorIfNotConverged.html">SNESSetErrorIfNotConverged</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line72"> 72: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetErrorIfNotConverged.html">SNESGetErrorIfNotConverged</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line73"> 73: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConverged.html">SNESConverged</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line75"> 75: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetWorkVecs.html">SNESSetWorkVecs</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line77"> 77: </a><strong><font color="#4169E1"><a name="SNESAddOptionsChecker"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESAddOptionsChecker.html">SNESAddOptionsChecker</a>(<a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>);
<a name="line79"> 79: </a><strong><font color="#4169E1"><a name="SNESRegister"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESRegister.html">SNESRegister</a>(const char[], <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>);
<a name="line81"> 81: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetKSP.html">SNESGetKSP</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/KSP/KSP.html">KSP</a> *)</font></strong>;
<a name="line82"> 82: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetKSP.html">SNESSetKSP</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/KSP/KSP.html">KSP</a>)</font></strong>;
<a name="line83"> 83: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetSolution.html">SNESSetSolution</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line84"> 84: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetSolution.html">SNESGetSolution</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line85"> 85: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetSolutionUpdate.html">SNESGetSolutionUpdate</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line86"> 86: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetRhs.html">SNESGetRhs</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line87"> 87: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESView.html">SNESView</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>)</font></strong>;
<a name="line88"> 88: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLoad.html">SNESLoad</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>)</font></strong>;
<a name="line89"> 89: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedReasonViewSet.html">SNESConvergedReasonViewSet</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, void *), void *, <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line90"> 90: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESViewFromOptions.html">SNESViewFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscObject.html">PetscObject</a>, const char[])</font></strong>;
<a name="line91"> 91: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedReasonView.html">SNESConvergedReasonView</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>)</font></strong>;
<a name="line92"> 92: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedReasonViewFromOptions.html">SNESConvergedReasonViewFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line93"> 93: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedReasonViewCancel.html">SNESConvergedReasonViewCancel</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line95"> 95: </a>PETSC_DEPRECATED_FUNCTION(3, 14, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESConvergedReasonView.html">SNESConvergedReasonView</a>()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESReasonView(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a> v)
<a name="line96"> 96: </a>{
<a name="line97"> 97: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESConvergedReasonView.html">SNESConvergedReasonView</a>(snes, v);
<a name="line98"> 98: </a>}
<a name="line99"> 99: </a>PETSC_DEPRECATED_FUNCTION(3, 14, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESConvergedReasonViewFromOptions.html">SNESConvergedReasonViewFromOptions</a>()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESReasonViewFromOptions(<a href="../manualpages/SNES/SNES.html">SNES</a> snes)
<a name="line100">100: </a>{
<a name="line101">101: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESConvergedReasonViewFromOptions.html">SNESConvergedReasonViewFromOptions</a>(snes);
<a name="line102">102: </a>}
<a name="line104">104: </a><strong><font color="#228B22">#define SNES_FILE_CLASSID 1211224</font></strong>
<a name="line106">106: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetOptionsPrefix.html">SNESSetOptionsPrefix</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[])</font></strong>;
<a name="line107">107: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESAppendOptionsPrefix.html">SNESAppendOptionsPrefix</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[])</font></strong>;
<a name="line108">108: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetOptionsPrefix.html">SNESGetOptionsPrefix</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char *[])</font></strong>;
<a name="line109">109: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetFromOptions.html">SNESSetFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line110">110: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESResetFromOptions.html">SNESResetFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line112">112: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetUseMatrixFree.html">SNESSetUseMatrixFree</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line113">113: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetUseMatrixFree.html">SNESGetUseMatrixFree</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line114">114: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatCreateSNESMF.html">MatCreateSNESMF</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line115">115: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatSNESMFGetSNES.html">MatSNESMFGetSNES</a>(<a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line116">116: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatSNESMFSetReuseBase.html">MatSNESMFSetReuseBase</a>(<a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line117">117: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatSNESMFGetReuseBase.html">MatSNESMFGetReuseBase</a>(<a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line118">118: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatMFFDComputeJacobian.html">MatMFFDComputeJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, void *)</font></strong>;
<a name="line119">119: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatCreateSNESMFMore.html">MatCreateSNESMFMore</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line120">120: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/MatSNESMFMoreSetParameters.html">MatSNESMFMoreSetParameters</a>(<a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line122">122: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetType.html">SNESGetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESType.html">SNESType</a> *)</font></strong>;
<a name="line123">123: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESMonitorDefaultSetUp(<a href="../manualpages/SNES/SNES.html">SNES</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line124">124: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorDefault.html">SNESMonitorDefault</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line125">125: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorScaling.html">SNESMonitorScaling</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line126">126: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorRange.html">SNESMonitorRange</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line127">127: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorRatio.html">SNESMonitorRatio</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line128">128: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorRatioSetUp.html">SNESMonitorRatioSetUp</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line129">129: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSolution.html">SNESMonitorSolution</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line130">130: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorResidual.html">SNESMonitorResidual</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line131">131: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorSolutionUpdate.html">SNESMonitorSolutionUpdate</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line132">132: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESMonitorDefaultShort(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line133">133: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorDefaultField.html">SNESMonitorDefaultField</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line134">134: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorJacUpdateSpectrum.html">SNESMonitorJacUpdateSpectrum</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line135">135: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMonitorFields.html">SNESMonitorFields</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line136">136: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/KSPMonitorSNESResidual.html">KSPMonitorSNESResidual</a>(<a href="../manualpages/KSP/KSP.html">KSP</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line137">137: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/KSPMonitorSNESResidualDrawLG.html">KSPMonitorSNESResidualDrawLG</a>(<a href="../manualpages/KSP/KSP.html">KSP</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line138">138: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/KSPMonitorSNESResidualDrawLGCreate.html">KSPMonitorSNESResidualDrawLGCreate</a>(<a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>, <a href="../manualpages/Viewer/PetscViewerFormat.html">PetscViewerFormat</a>, void *, PetscViewerAndFormat **)</font></strong>;
<a name="line140">140: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line141">141: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetDivergenceTolerance.html">SNESSetDivergenceTolerance</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line142">142: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetTolerances.html">SNESGetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line143">143: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetDivergenceTolerance.html">SNESGetDivergenceTolerance</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line144">144: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetForceIteration.html">SNESGetForceIteration</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line145">145: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetForceIteration.html">SNESSetForceIteration</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line146">146: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetIterationNumber.html">SNESGetIterationNumber</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line147">147: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetIterationNumber.html">SNESSetIterationNumber</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line149">149: </a><font color="#B22222">/*E</font>
<a name="line150">150: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNESNewtonTRFallbackType</a> - type of fallback in case the solution of the trust-region subproblem is outside of the radius</font>
<a name="line152">152: </a><font color="#B22222"> Values:</font>
<a name="line153">153: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_NEWTON</a>` - use scaled Newton step</font>
<a name="line154">154: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_CAUCHY</a>` - use Cauchy direction</font>
<a name="line155">155: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_DOGLEG</a>` - use dogleg method</font>
<a name="line157">157: </a><font color="#B22222"> Level: intermediate</font>
<a name="line159">159: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESNEWTONTR.html">SNESNEWTONTR</a>`, `<a href="../manualpages/SNES/SNESNEWTONTRDC.html">SNESNEWTONTRDC</a>`</font>
<a name="line160">160: </a><font color="#B22222">E*/</font>
<a name="line161">161: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line162">162: </a> <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_NEWTON</a>,
<a name="line163">163: </a> <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_CAUCHY</a>,
<a name="line164">164: </a> <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNES_TR_FALLBACK_DOGLEG</a>,
<a name="line165">165: </a>} <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNESNewtonTRFallbackType</a>;
<a name="line167">167: </a>PETSC_EXTERN const char *const SNESNewtonTRFallbackTypes[];
<a name="line169">169: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetPreCheck.html">SNESNewtonTRSetPreCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line170">170: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRGetPreCheck.html">SNESNewtonTRGetPreCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line171">171: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetPostCheck.html">SNESNewtonTRSetPostCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line172">172: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRGetPostCheck.html">SNESNewtonTRGetPostCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line173">173: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetFallbackType.html">SNESNewtonTRSetFallbackType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNewtonTRFallbackType.html">SNESNewtonTRFallbackType</a>)</font></strong>;
<a name="line174">174: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRPreCheck.html">SNESNewtonTRPreCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line175">175: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRPostCheck.html">SNESNewtonTRPostCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line176">176: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetNormType.html">SNESNewtonTRSetNormType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/NormType.html">NormType</a>)</font></strong>;
<a name="line178">178: </a><font color="#B22222">/*E</font>
<a name="line179">179: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNESNewtonTRQNType</a> - type of quasi-Newton model to use</font>
<a name="line181">181: </a><font color="#B22222"> Values:</font>
<a name="line182">182: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_NONE</a>` - do not use a quasi-Newton model</font>
<a name="line183">183: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_SAME</a>` - use the same quasi-Newton model for matrix and preconditioner</font>
<a name="line184">184: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_DIFFERENT</a>` - use different quasi-Newton models for matrix and preconditioner</font>
<a name="line186">186: </a><font color="#B22222"> Level: intermediate</font>
<a name="line188">188: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESNEWTONTR.html">SNESNEWTONTR</a>`</font>
<a name="line189">189: </a><font color="#B22222">E*/</font>
<a name="line190">190: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line191">191: </a> <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_NONE</a>,
<a name="line192">192: </a> <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_SAME</a>,
<a name="line193">193: </a> <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNES_TR_QN_DIFFERENT</a>,
<a name="line194">194: </a>} <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNESNewtonTRQNType</a>;
<a name="line196">196: </a>PETSC_EXTERN const char *const SNESNewtonTRQNTypes[];
<a name="line198">198: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetQNType.html">SNESNewtonTRSetQNType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNewtonTRQNType.html">SNESNewtonTRQNType</a>)</font></strong>;
<a name="line200">200: </a>PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 22, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESNewtonTRSetTolerances.html">SNESNewtonTRSetTolerances</a>()"</font>, ) <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetTrustRegionTolerance.html">SNESSetTrustRegionTolerance</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>);
<a name="line201">201: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetTolerances.html">SNESNewtonTRSetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line202">202: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRGetTolerances.html">SNESNewtonTRGetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line203">203: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRSetUpdateParameters.html">SNESNewtonTRSetUpdateParameters</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line204">204: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRGetUpdateParameters.html">SNESNewtonTRGetUpdateParameters</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line206">206: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRDCGetRhoFlag.html">SNESNewtonTRDCGetRhoFlag</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line207">207: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRDCSetPreCheck.html">SNESNewtonTRDCSetPreCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line208">208: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRDCGetPreCheck.html">SNESNewtonTRDCGetPreCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line209">209: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRDCSetPostCheck.html">SNESNewtonTRDCSetPostCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line210">210: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonTRDCGetPostCheck.html">SNESNewtonTRDCGetPostCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line212">212: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNonlinearStepFailures.html">SNESGetNonlinearStepFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line213">213: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetMaxNonlinearStepFailures.html">SNESSetMaxNonlinearStepFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line214">214: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetMaxNonlinearStepFailures.html">SNESGetMaxNonlinearStepFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line215">215: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNumberFunctionEvals.html">SNESGetNumberFunctionEvals</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line217">217: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetLagPreconditioner.html">SNESSetLagPreconditioner</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line218">218: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetLagPreconditioner.html">SNESGetLagPreconditioner</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line219">219: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetLagJacobian.html">SNESSetLagJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line220">220: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetLagJacobian.html">SNESGetLagJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line221">221: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetLagPreconditionerPersists.html">SNESSetLagPreconditionerPersists</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line222">222: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetLagJacobianPersists.html">SNESSetLagJacobianPersists</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line223">223: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetGridSequence.html">SNESSetGridSequence</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line224">224: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetGridSequence.html">SNESGetGridSequence</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line226">226: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetLinearSolveIterations.html">SNESGetLinearSolveIterations</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line227">227: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetLinearSolveFailures.html">SNESGetLinearSolveFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line228">228: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetMaxLinearSolveFailures.html">SNESSetMaxLinearSolveFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line229">229: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetMaxLinearSolveFailures.html">SNESGetMaxLinearSolveFailures</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line230">230: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetCountersReset.html">SNESSetCountersReset</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line231">231: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESResetCounters.html">SNESResetCounters</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line233">233: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESKSPSetUseEW.html">SNESKSPSetUseEW</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line234">234: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESKSPGetUseEW.html">SNESKSPGetUseEW</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line235">235: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESKSPSetParametersEW.html">SNESKSPSetParametersEW</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line236">236: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESKSPGetParametersEW.html">SNESKSPGetParametersEW</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line238">238: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESMonitorLGRange(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, void *)</font></strong>;
<a name="line240">240: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetApplicationContext.html">SNESSetApplicationContext</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, void *)</font></strong>;
<a name="line241">241: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetApplicationContext.html">SNESGetApplicationContext</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, void *)</font></strong>;
<a name="line242">242: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetComputeApplicationContext.html">SNESSetComputeApplicationContext</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, void **), <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line244">244: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESPythonSetType.html">SNESPythonSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[])</font></strong>;
<a name="line245">245: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESPythonGetType.html">SNESPythonGetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char *[])</font></strong>;
<a name="line247">247: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetFunctionDomainError.html">SNESSetFunctionDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line248">248: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetFunctionDomainError.html">SNESGetFunctionDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line249">249: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetJacobianDomainError.html">SNESGetJacobianDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line250">250: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetJacobianDomainError.html">SNESSetJacobianDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line251">251: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetCheckJacobianDomainError.html">SNESSetCheckJacobianDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line252">252: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetCheckJacobianDomainError.html">SNESGetCheckJacobianDomainError</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line254">254: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_TR_DELTA_DEPRECATED</a> SNES_CONVERGED_TR_DELTA PETSC_DEPRECATED_ENUM(3, 12, 0, </font><font color="#666666">"<a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_TR_DELTA</a>"</font><font color="#228B22">, )</font></strong>
<a name="line255">255: </a><font color="#B22222">/*E</font>
<a name="line256">256: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> - reason a `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()` was determined to have converged or diverged</font>
<a name="line258">258: </a><font color="#B22222"> Values:</font>
<a name="line259">259: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNES_CONVERGED_FNORM_ABS.html">SNES_CONVERGED_FNORM_ABS</a>` - 2-norm(F) <= abstol</font>
<a name="line260">260: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_CONVERGED_FNORM_RELATIVE.html">SNES_CONVERGED_FNORM_RELATIVE</a>` - 2-norm(F) <= rtol*2-norm(F(x_0)) where x_0 is the initial guess</font>
<a name="line261">261: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_CONVERGED_SNORM_RELATIVE.html">SNES_CONVERGED_SNORM_RELATIVE</a>` - The 2-norm of the last step <= stol * 2-norm(x) where x is the current</font>
<a name="line262">262: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_USER</a>` - The user has indicated convergence for an arbitrary reason</font>
<a name="line263">263: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_FUNCTION_COUNT.html">SNES_DIVERGED_FUNCTION_COUNT</a>` - The user provided function has been called more times than the maximum set in `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line264">264: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_DTOL.html">SNES_DIVERGED_DTOL</a>` - The norm of the function has increased by a factor of divtol set with `<a href="../manualpages/SNES/SNESSetDivergenceTolerance.html">SNESSetDivergenceTolerance</a>()`</font>
<a name="line265">265: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_FNORM_NAN.html">SNES_DIVERGED_FNORM_NAN</a>` - the 2-norm of the current function evaluation is not-a-number (NaN), this</font>
<a name="line266">266: </a><font color="#B22222"> is usually caused by a division of 0 by 0.</font>
<a name="line267">267: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_MAX_IT.html">SNES_DIVERGED_MAX_IT</a>` - `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()` has reached the maximum number of iterations requested</font>
<a name="line268">268: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_LINE_SEARCH.html">SNES_DIVERGED_LINE_SEARCH</a>` - The line search has failed. This only occurs for `<a href="../manualpages/SNES/SNES.html">SNES</a>` solvers that use a line search</font>
<a name="line269">269: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_DIVERGED_LOCAL_MIN.html">SNES_DIVERGED_LOCAL_MIN</a>` - the algorithm seems to have stagnated at a local minimum that is not zero.</font>
<a name="line270">270: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_USER</a>` - The user has indicated divergence for an arbitrary reason</font>
<a name="line271">271: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_ITERATING</a> - this only occurs if `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()` is called during the `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`</font>
<a name="line273">273: </a><font color="#B22222"> Level: beginner</font>
<a name="line275">275: </a><font color="#B22222"> Notes:</font>
<a name="line276">276: </a><font color="#B22222"> The two most common reasons for divergence are an incorrectly coded or computed Jacobian or failure or lack of convergence in the linear system</font>
<a name="line277">277: </a><font color="#B22222"> (in this case we recommend</font>
<a name="line278">278: </a><font color="#B22222"> testing with `-pc_type lu` to eliminate the linear solver as the cause of the problem).</font>
<a name="line280">280: </a><font color="#B22222"> `<a href="../manualpages/SNES/SNES_DIVERGED_LOCAL_MIN.html">SNES_DIVERGED_LOCAL_MIN</a>` can only occur when using a `<a href="../manualpages/SNES/SNES.html">SNES</a>` solver that uses a line search (`<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`).</font>
<a name="line281">281: </a><font color="#B22222"> The line search wants to minimize Q(alpha) = 1/2 || F(x + alpha s) ||^2_2 this occurs</font>
<a name="line282">282: </a><font color="#B22222"> at Q'(alpha) = s^T F'(x+alpha s)^T F(x+alpha s) = 0. If s is the Newton direction - F'(x)^(-1)F(x) then</font>
<a name="line283">283: </a><font color="#B22222"> you get Q'(alpha) = -F(x)^T F'(x)^(-1)^T F'(x+alpha s)F(x+alpha s); when alpha = 0</font>
<a name="line284">284: </a><font color="#B22222"> Q'(0) = - ||F(x)||^2_2 which is always NEGATIVE if F'(x) is invertible. This means the Newton</font>
<a name="line285">285: </a><font color="#B22222"> direction is a descent direction and the line search should succeed if alpha is small enough.</font>
<a name="line287">287: </a><font color="#B22222"> If F'(x) is NOT invertible AND F'(x)^T F(x) = 0 then Q'(0) = 0 and the Newton direction</font>
<a name="line288">288: </a><font color="#B22222"> is NOT a descent direction so the line search will fail. All one can do at this point</font>
<a name="line289">289: </a><font color="#B22222"> is change the initial guess and try again.</font>
<a name="line291">291: </a><font color="#B22222"> An alternative explanation: Newton's method can be regarded as replacing the function with</font>
<a name="line292">292: </a><font color="#B22222"> its linear approximation and minimizing the 2-norm of that. That is F(x+s) approx F(x) + F'(x)s</font>
<a name="line293">293: </a><font color="#B22222"> so we minimize || F(x) + F'(x) s ||^2_2; do this using Least Squares. If F'(x) is invertible then</font>
<a name="line294">294: </a><font color="#B22222"> s = - F'(x)^(-1)F(x) otherwise F'(x)^T F'(x) s = -F'(x)^T F(x). If F'(x)^T F(x) is NOT zero then there</font>
<a name="line295">295: </a><font color="#B22222"> exists a nontrivial (that is F'(x)s != 0) solution to the equation and this direction is</font>
<a name="line296">296: </a><font color="#B22222"> s = - [F'(x)^T F'(x)]^(-1) F'(x)^T F(x) so Q'(0) = - F(x)^T F'(x) [F'(x)^T F'(x)]^(-T) F'(x)^T F(x)</font>
<a name="line297">297: </a><font color="#B22222"> = - (F'(x)^T F(x)) [F'(x)^T F'(x)]^(-T) (F'(x)^T F(x)). Since we are assuming (F'(x)^T F(x)) != 0</font>
<a name="line298">298: </a><font color="#B22222"> and F'(x)^T F'(x) has no negative eigenvalues Q'(0) < 0 so s is a descent direction and the line</font>
<a name="line299">299: </a><font color="#B22222"> search should succeed for small enough alpha.</font>
<a name="line301">301: </a><font color="#B22222"> Note that this RARELY happens in practice. Far more likely the linear system is not being solved</font>
<a name="line302">302: </a><font color="#B22222"> (well enough?) or the Jacobian is wrong.</font>
<a name="line304">304: </a><font color="#B22222"> `<a href="../manualpages/SNES/SNES_DIVERGED_MAX_IT.html">SNES_DIVERGED_MAX_IT</a>` means that the solver reached the maximum number of iterations without satisfying any</font>
<a name="line305">305: </a><font color="#B22222"> convergence criteria. `<a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_ITS</a>` means that `<a href="../manualpages/SNES/SNESConvergedSkip.html">SNESConvergedSkip</a>()` was chosen as the convergence test;</font>
<a name="line306">306: </a><font color="#B22222"> thus the usual convergence criteria have not been checked and may or may not be satisfied.</font>
<a name="line308">308: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/KSP/KSPConvergedReason.html">KSPConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetConvergenceTest.html">SNESSetConvergenceTest</a>()`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line309">309: </a><font color="#B22222">E*/</font>
<a name="line310">310: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> { <font color="#B22222">/* converged */</font>
<a name="line311">311: </a> <a href="../manualpages/SNES/SNES_CONVERGED_FNORM_ABS.html">SNES_CONVERGED_FNORM_ABS</a> = 2, <font color="#B22222">/* ||F|| < atol */</font>
<a name="line312">312: </a> <a href="../manualpages/SNES/SNES_CONVERGED_FNORM_RELATIVE.html">SNES_CONVERGED_FNORM_RELATIVE</a> = 3, <font color="#B22222">/* ||F|| < rtol*||F_initial|| */</font>
<a name="line313">313: </a> <a href="../manualpages/SNES/SNES_CONVERGED_SNORM_RELATIVE.html">SNES_CONVERGED_SNORM_RELATIVE</a> = 4, <font color="#B22222">/* Newton computed step size small; || delta x || < stol || x || */</font>
<a name="line314">314: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_ITS</a> = 5, <font color="#B22222">/* maximum iterations reached */</font>
<a name="line315">315: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_BREAKOUT_INNER_ITER</a> = 6, <font color="#B22222">/* Flag to break out of inner loop after checking custom convergence, used in multi-phase flow when state changes */</font>
<a name="line316">316: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_USER</a> = 7, <font color="#B22222">/* The user has indicated convergence for an arbitrary reason */</font>
<a name="line317">317: </a> <font color="#B22222">/* diverged */</font>
<a name="line318">318: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_FUNCTION_DOMAIN</a> = -1, <font color="#B22222">/* the new x location passed the function is not in the domain of F */</font>
<a name="line319">319: </a> <a href="../manualpages/SNES/SNES_DIVERGED_FUNCTION_COUNT.html">SNES_DIVERGED_FUNCTION_COUNT</a> = -2,
<a name="line320">320: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_LINEAR_SOLVE</a> = -3, <font color="#B22222">/* the linear solve failed */</font>
<a name="line321">321: </a> <a href="../manualpages/SNES/SNES_DIVERGED_FNORM_NAN.html">SNES_DIVERGED_FNORM_NAN</a> = -4,
<a name="line322">322: </a> <a href="../manualpages/SNES/SNES_DIVERGED_MAX_IT.html">SNES_DIVERGED_MAX_IT</a> = -5,
<a name="line323">323: </a> <a href="../manualpages/SNES/SNES_DIVERGED_LINE_SEARCH.html">SNES_DIVERGED_LINE_SEARCH</a> = -6, <font color="#B22222">/* the line search failed */</font>
<a name="line324">324: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_INNER</a> = -7, <font color="#B22222">/* inner solve failed */</font>
<a name="line325">325: </a> <a href="../manualpages/SNES/SNES_DIVERGED_LOCAL_MIN.html">SNES_DIVERGED_LOCAL_MIN</a> = -8, <font color="#B22222">/* || J^T b || is small, implies converged to local minimum of F() */</font>
<a name="line326">326: </a> <a href="../manualpages/SNES/SNES_DIVERGED_DTOL.html">SNES_DIVERGED_DTOL</a> = -9, <font color="#B22222">/* || F || > divtol*||F_initial|| */</font>
<a name="line327">327: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_JACOBIAN_DOMAIN</a> = -10, <font color="#B22222">/* Jacobian calculation does not make sense */</font>
<a name="line328">328: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_TR_DELTA</a> = -11,
<a name="line329">329: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_TR_DELTA_DEPRECATED</a> = -11,
<a name="line330">330: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_DIVERGED_USER</a> = -12, <font color="#B22222">/* The user has indicated divergence for an arbitrary reason */</font>
<a name="line332">332: </a> <a href="../manualpages/SNES/SNESConvergedReason.html">SNES_CONVERGED_ITERATING</a> = 0
<a name="line333">333: </a>} <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>;
<a name="line334">334: </a>PETSC_EXTERN const char *const *SNESConvergedReasons;
<a name="line336">336: </a><font color="#B22222">/*MC</font>
<a name="line337">337: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_CONVERGED_FNORM_ABS.html">SNES_CONVERGED_FNORM_ABS</a> - 2-norm(F) <= abstol</font>
<a name="line339">339: </a><font color="#B22222"> Level: beginner</font>
<a name="line341">341: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line342">342: </a><font color="#B22222">M*/</font>
<a name="line344">344: </a><font color="#B22222">/*MC</font>
<a name="line345">345: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_CONVERGED_FNORM_RELATIVE.html">SNES_CONVERGED_FNORM_RELATIVE</a> - 2-norm(F) <= rtol*2-norm(F(x_0)) where x_0 is the initial guess</font>
<a name="line347">347: </a><font color="#B22222"> Level: beginner</font>
<a name="line349">349: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line350">350: </a><font color="#B22222">M*/</font>
<a name="line352">352: </a><font color="#B22222">/*MC</font>
<a name="line353">353: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_CONVERGED_SNORM_RELATIVE.html">SNES_CONVERGED_SNORM_RELATIVE</a> - The 2-norm of the last step <= stol * 2-norm(x) where x is the current</font>
<a name="line354">354: </a><font color="#B22222"> solution and stol is the 4th argument to `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line356">356: </a><font color="#B22222"> Options Database Key:</font>
<a name="line357">357: </a><font color="#B22222"> -snes_stol <stol> - the step tolerance</font>
<a name="line359">359: </a><font color="#B22222"> Level: beginner</font>
<a name="line361">361: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line362">362: </a><font color="#B22222">M*/</font>
<a name="line364">364: </a><font color="#B22222">/*MC</font>
<a name="line365">365: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_FUNCTION_COUNT.html">SNES_DIVERGED_FUNCTION_COUNT</a> - The user provided function has been called more times then the final</font>
<a name="line366">366: </a><font color="#B22222"> argument to `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line368">368: </a><font color="#B22222"> Level: beginner</font>
<a name="line370">370: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line371">371: </a><font color="#B22222">M*/</font>
<a name="line373">373: </a><font color="#B22222">/*MC</font>
<a name="line374">374: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_DTOL.html">SNES_DIVERGED_DTOL</a> - The norm of the function has increased by a factor of divtol set with `<a href="../manualpages/SNES/SNESSetDivergenceTolerance.html">SNESSetDivergenceTolerance</a>()`</font>
<a name="line376">376: </a><font color="#B22222"> Level: beginner</font>
<a name="line378">378: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`, `<a href="../manualpages/SNES/SNESSetDivergenceTolerance.html">SNESSetDivergenceTolerance</a>()`</font>
<a name="line379">379: </a><font color="#B22222">M*/</font>
<a name="line381">381: </a><font color="#B22222">/*MC</font>
<a name="line382">382: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_FNORM_NAN.html">SNES_DIVERGED_FNORM_NAN</a> - the 2-norm of the current function evaluation is not-a-number (NaN), this</font>
<a name="line383">383: </a><font color="#B22222"> is usually caused by a division of 0 by 0.</font>
<a name="line385">385: </a><font color="#B22222"> Level: beginner</font>
<a name="line387">387: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line388">388: </a><font color="#B22222">M*/</font>
<a name="line390">390: </a><font color="#B22222">/*MC</font>
<a name="line391">391: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_MAX_IT.html">SNES_DIVERGED_MAX_IT</a> - <a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>() has reached the maximum number of iterations requested</font>
<a name="line393">393: </a><font color="#B22222"> Level: beginner</font>
<a name="line395">395: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line396">396: </a><font color="#B22222">M*/</font>
<a name="line398">398: </a><font color="#B22222">/*MC</font>
<a name="line399">399: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_LINE_SEARCH.html">SNES_DIVERGED_LINE_SEARCH</a> - The line search has failed. This only occurs for a `<a href="../manualpages/SNES/SNES.html">SNES</a>` solvers that use a line search</font>
<a name="line401">401: </a><font color="#B22222"> Level: beginner</font>
<a name="line403">403: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`, `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`</font>
<a name="line404">404: </a><font color="#B22222">M*/</font>
<a name="line406">406: </a><font color="#B22222">/*MC</font>
<a name="line407">407: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_DIVERGED_LOCAL_MIN.html">SNES_DIVERGED_LOCAL_MIN</a> - the algorithm seems to have stagnated at a local minimum that is not zero.</font>
<a name="line408">408: </a><font color="#B22222"> See the manual page for `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>` for more details</font>
<a name="line410">410: </a><font color="#B22222"> Level: beginner</font>
<a name="line412">412: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line413">413: </a><font color="#B22222">M*/</font>
<a name="line415">415: </a><font color="#B22222">/*MC</font>
<a name="line416">416: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_CONERGED_ITERATING.html">SNES_CONERGED_ITERATING</a> - this only occurs if `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()` is called during the `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`</font>
<a name="line418">418: </a><font color="#B22222"> Level: beginner</font>
<a name="line420">420: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetTolerances.html">SNESSetTolerances</a>()`</font>
<a name="line421">421: </a><font color="#B22222">M*/</font>
<a name="line423">423: </a><strong><font color="#4169E1"><a name="SNESSetConvergenceTest"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetConvergenceTest.html">SNESSetConvergenceTest</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> *, void *), void *, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(void *)</font></strong>);
<a name="line424">424: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedDefault.html">SNESConvergedDefault</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> *, void *)</font></strong>;
<a name="line425">425: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedSkip.html">SNESConvergedSkip</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> *, void *)</font></strong>;
<a name="line426">426: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESConvergedCorrectPressure.html">SNESConvergedCorrectPressure</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> *, void *)</font></strong>;
<a name="line427">427: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a> *)</font></strong>;
<a name="line428">428: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetConvergedReasonString.html">SNESGetConvergedReasonString</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char **)</font></strong>;
<a name="line429">429: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetConvergedReason.html">SNESSetConvergedReason</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>)</font></strong>;
<a name="line431">431: </a>PETSC_DEPRECATED_FUNCTION(3, 5, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESConvergedSkip.html">SNESConvergedSkip</a>()"</font>, ) static inline void SNESSkipConverged(void)
<a name="line432">432: </a>{ <font color="#B22222">/* never called */</font>
<a name="line433">433: </a>}
<a name="line434">434: </a><strong><font color="#228B22">#define SNESSkipConverged (SNESSkipConverged, <a href="../manualpages/SNES/SNESConvergedSkip.html">SNESConvergedSkip</a>)</font></strong>
<a name="line436">436: </a><font color="#B22222">/*S</font>
<a name="line437">437: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESInitialGuessFn.html">SNESInitialGuessFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` compute initial guess function that would be passed to `<a href="../manualpages/SNES/SNESSetComputeInitialGuess.html">SNESSetComputeInitialGuess</a>()`</font>
<a name="line439">439: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line440">440: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line441">441: </a><font color="#B22222">. u - output vector to contain initial guess</font>
<a name="line442">442: </a><font color="#B22222">- ctx - [optional] user-defined function context</font>
<a name="line444">444: </a><font color="#B22222"> Level: beginner</font>
<a name="line446">446: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetComputeInitialGuess.html">SNESSetComputeInitialGuess</a>()`, `<a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>()`, `<a href="../manualpages/SNES/SNESGetFunction.html">SNESGetFunction</a>()`, `<a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a>`, `<a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a>`</font>
<a name="line447">447: </a><font color="#B22222">S*/</font>
<a name="line448">448: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESInitialGuessFn.html">SNESInitialGuessFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u, void *ctx)</font></strong>;
<a name="line450">450: </a><font color="#B22222">/*S</font>
<a name="line451">451: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` evaluation function that would be passed to `<a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>()`</font>
<a name="line453">453: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line454">454: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line455">455: </a><font color="#B22222">. u - input vector</font>
<a name="line456">456: </a><font color="#B22222">. F - function vector</font>
<a name="line457">457: </a><font color="#B22222">- ctx - [optional] user-defined function context</font>
<a name="line459">459: </a><font color="#B22222"> Level: beginner</font>
<a name="line461">461: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>()`, `<a href="../manualpages/SNES/SNESGetFunction.html">SNESGetFunction</a>()`, `<a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a>`, `<a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a>`</font>
<a name="line462">462: </a><font color="#B22222">S*/</font>
<a name="line463">463: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Vec/Vec.html">Vec</a> F, void *ctx)</font></strong>;
<a name="line465">465: </a><font color="#B22222">/*S</font>
<a name="line466">466: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` objective evaluation function that would be passed to `<a href="../manualpages/SNES/SNESSetObjective.html">SNESSetObjective</a>()`</font>
<a name="line468">468: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line469">469: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line470">470: </a><font color="#B22222">. u - input vector</font>
<a name="line471">471: </a><font color="#B22222">. o - output value</font>
<a name="line472">472: </a><font color="#B22222">- ctx - [optional] user-defined function context</font>
<a name="line474">474: </a><font color="#B22222"> Level: beginner</font>
<a name="line476">476: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>()`, `<a href="../manualpages/SNES/SNESGetFunction.html">SNESGetFunction</a>()`, `<a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a>`, `<a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a>`</font>
<a name="line477">477: </a><font color="#B22222">S*/</font>
<a name="line478">478: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *o, void *ctx)</font></strong>;
<a name="line480">480: </a><font color="#B22222">/*S</font>
<a name="line481">481: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` Jacobian evaluation function that would be passed to `<a href="../manualpages/SNES/SNESSetJacobian.html">SNESSetJacobian</a>()`</font>
<a name="line483">483: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line484">484: </a><font color="#B22222">+ snes - the `<a href="../manualpages/SNES/SNES.html">SNES</a>` context obtained from `<a href="../manualpages/SNES/SNESCreate.html">SNESCreate</a>()`</font>
<a name="line485">485: </a><font color="#B22222">. u - input vector</font>
<a name="line486">486: </a><font color="#B22222">. Amat - (approximate) Jacobian matrix</font>
<a name="line487">487: </a><font color="#B22222">. Pmat - matrix used to construct the preconditioner, often the same as `Amat`</font>
<a name="line488">488: </a><font color="#B22222">- ctx - [optional] user-defined context for matrix evaluation routine</font>
<a name="line490">490: </a><font color="#B22222"> Level: beginner</font>
<a name="line492">492: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetJacobian.html">SNESSetJacobian</a>()`, `<a href="../manualpages/SNES/SNESGetJacobian.html">SNESGetJacobian</a>()`, `<a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a>`, `<a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a>`</font>
<a name="line493">493: </a><font color="#B22222">S*/</font>
<a name="line494">494: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Mat/Mat.html">Mat</a> Amat, <a href="../manualpages/Mat/Mat.html">Mat</a> Pmat, void *ctx)</font></strong>;
<a name="line496">496: </a><font color="#B22222">/*S</font>
<a name="line497">497: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` nonlinear Gauss-Seidel function that would be passed to `<a href="../manualpages/SNES/SNESSetNGS.html">SNESSetNGS</a>()`</font>
<a name="line499">499: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line500">500: </a><font color="#B22222">+ snes - the `<a href="../manualpages/SNES/SNES.html">SNES</a>` context obtained from `<a href="../manualpages/SNES/SNESCreate.html">SNESCreate</a>()`</font>
<a name="line501">501: </a><font color="#B22222">. u - the current solution, updated in place</font>
<a name="line502">502: </a><font color="#B22222">. b - the right-hand side vector (which may be `NULL`)</font>
<a name="line503">503: </a><font color="#B22222">- ctx - [optional] user-defined context for matrix evaluation routine</font>
<a name="line505">505: </a><font color="#B22222"> Level: beginner</font>
<a name="line507">507: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetJacobian.html">SNESSetJacobian</a>()`, `<a href="../manualpages/SNES/SNESGetJacobian.html">SNESGetJacobian</a>()`, `<a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a>`, `<a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>()`, `<a href="../manualpages/SNES/SNESGetFunction.html">SNESGetFunction</a>()`, `<a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a>`</font>
<a name="line508">508: </a><font color="#B22222">S*/</font>
<a name="line509">509: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Vec/Vec.html">Vec</a> b, void *ctx)</font></strong>;
<a name="line511">511: </a><font color="#B22222">/*S</font>
<a name="line512">512: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESUpdateFn.html">SNESUpdateFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` update function that would be passed to `<a href="../manualpages/SNES/SNESSetUpdate.html">SNESSetUpdate</a>()`</font>
<a name="line514">514: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line515">515: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line516">516: </a><font color="#B22222">- step - the current iteration index</font>
<a name="line518">518: </a><font color="#B22222"> Level: advanced</font>
<a name="line520">520: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetUpdate.html">SNESSetUpdate</a>()`</font>
<a name="line521">521: </a><font color="#B22222">S*/</font>
<a name="line522">522: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESUpdateFn.html">SNESUpdateFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> step)</font></strong>;
<a name="line524">524: </a><font color="#B22222">/* --------- Solving systems of nonlinear equations --------------- */</font>
<a name="line525">525: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetFunction.html">SNESSetFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, void *)</font></strong>;
<a name="line526">526: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetFunction.html">SNESGetFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> **, void **)</font></strong>;
<a name="line527">527: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESComputeFunction.html">SNESComputeFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line528">528: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESComputeMFFunction.html">SNESComputeMFFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line529">529: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetInitialFunction.html">SNESSetInitialFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line531">531: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetJacobian.html">SNESSetJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> *, void *)</font></strong>;
<a name="line532">532: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetJacobian.html">SNESGetJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *, <a href="../manualpages/Mat/Mat.html">Mat</a> *, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> **, void **)</font></strong>;
<a name="line533">533: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> <a href="../manualpages/SNES/SNESObjectiveComputeFunctionDefaultFD.html">SNESObjectiveComputeFunctionDefaultFD</a>;
<a name="line534">534: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> <a href="../manualpages/SNES/SNESComputeJacobianDefault.html">SNESComputeJacobianDefault</a>;
<a name="line535">535: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> <a href="../manualpages/SNES/SNESComputeJacobianDefaultColor.html">SNESComputeJacobianDefaultColor</a>;
<a name="line536">536: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESPruneJacobianColor.html">SNESPruneJacobianColor</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>)</font></strong>;
<a name="line537">537: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetComputeInitialGuess.html">SNESSetComputeInitialGuess</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESInitialGuessFn.html">SNESInitialGuessFn</a> *, void *)</font></strong>;
<a name="line538">538: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetPicard.html">SNESSetPicard</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> *, void *)</font></strong>;
<a name="line539">539: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetPicard.html">SNESGetPicard</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> **, <a href="../manualpages/Mat/Mat.html">Mat</a> *, <a href="../manualpages/Mat/Mat.html">Mat</a> *, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> **, void **)</font></strong>;
<a name="line540">540: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> SNESPicardComputeFunction;
<a name="line541">541: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> SNESPicardComputeMFFunction;
<a name="line542">542: </a>PETSC_EXTERN <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> SNESPicardComputeJacobian;
<a name="line544">544: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetObjective.html">SNESSetObjective</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a> *, void *)</font></strong>;
<a name="line545">545: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetObjective.html">SNESGetObjective</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a> **, void **)</font></strong>;
<a name="line546">546: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESComputeObjective.html">SNESComputeObjective</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line548">548: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetUpdate.html">SNESSetUpdate</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESUpdateFn.html">SNESUpdateFn</a> *)</font></strong>;
<a name="line550">550: </a><font color="#B22222">/*E</font>
<a name="line551">551: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a> - Frequency with which the norm is computed during a nonliner solve</font>
<a name="line553">553: </a><font color="#B22222"> Values:</font>
<a name="line554">554: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESNormSchedule.html">SNES_NORM_DEFAULT</a>` - use the default behavior for the current `<a href="../manualpages/SNES/SNESType.html">SNESType</a>`</font>
<a name="line555">555: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_NORM_NONE.html">SNES_NORM_NONE</a>` - avoid all norm computations</font>
<a name="line556">556: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_NORM_ALWAYS.html">SNES_NORM_ALWAYS</a>` - compute the norms whenever possible</font>
<a name="line557">557: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_NORM_INITIAL_ONLY.html">SNES_NORM_INITIAL_ONLY</a>` - compute the norm only when the algorithm starts</font>
<a name="line558">558: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a>` - compute the norm only when the algorithm finishes</font>
<a name="line559">559: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNES_NORM_INITIAL_FINAL_ONLY.html">SNES_NORM_INITIAL_FINAL_ONLY</a>` - compute the norm at the start and end of the algorithm</font>
<a name="line561">561: </a><font color="#B22222"> Level: advanced</font>
<a name="line563">563: </a><font color="#B22222"> Notes:</font>
<a name="line564">564: </a><font color="#B22222"> Support for these is highly dependent on the solver.</font>
<a name="line566">566: </a><font color="#B22222"> Some options limit the convergence tests that can be used.</font>
<a name="line568">568: </a><font color="#B22222"> The `<a href="../manualpages/SNES/SNES_NORM_NONE.html">SNES_NORM_NONE</a>` option is most commonly used when the nonlinear solver is being used as a smoother, for example for `<a href="../manualpages/SNESFAS/SNESFAS.html">SNESFAS</a>`</font>
<a name="line570">570: </a><font color="#B22222"> This is primarily used to turn off extra norm and function computation</font>
<a name="line571">571: </a><font color="#B22222"> when the solvers are composed.</font>
<a name="line573">573: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/KSP/KSPSetNormType.html">KSPSetNormType</a>()`,</font>
<a name="line574">574: </a><font color="#B22222"> `<a href="../manualpages/KSP/KSPSetConvergenceTest.html">KSPSetConvergenceTest</a>()`, `<a href="../manualpages/KSP/KSPSetPCSide.html">KSPSetPCSide</a>()`</font>
<a name="line575">575: </a><font color="#B22222">E*/</font>
<a name="line576">576: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line577">577: </a> <a href="../manualpages/SNES/SNESNormSchedule.html">SNES_NORM_DEFAULT</a> = -1,
<a name="line578">578: </a> <a href="../manualpages/SNES/SNES_NORM_NONE.html">SNES_NORM_NONE</a> = 0,
<a name="line579">579: </a> <a href="../manualpages/SNES/SNES_NORM_ALWAYS.html">SNES_NORM_ALWAYS</a> = 1,
<a name="line580">580: </a> <a href="../manualpages/SNES/SNES_NORM_INITIAL_ONLY.html">SNES_NORM_INITIAL_ONLY</a> = 2,
<a name="line581">581: </a> <a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a> = 3,
<a name="line582">582: </a> <a href="../manualpages/SNES/SNES_NORM_INITIAL_FINAL_ONLY.html">SNES_NORM_INITIAL_FINAL_ONLY</a> = 4
<a name="line583">583: </a>} <a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>;
<a name="line584">584: </a>PETSC_EXTERN const char *const *const SNESNormSchedules;
<a name="line586">586: </a><font color="#B22222">/*MC</font>
<a name="line587">587: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_NORM_NONE.html">SNES_NORM_NONE</a> - Don't compute function and its L2 norm when possible</font>
<a name="line589">589: </a><font color="#B22222"> Level: advanced</font>
<a name="line591">591: </a><font color="#B22222"> Note:</font>
<a name="line592">592: </a><font color="#B22222"> This is most useful for stationary solvers with a fixed number of iterations used as smoothers.</font>
<a name="line594">594: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>()`, `<a href="../manualpages/SNES/SNESNormSchedule.html">SNES_NORM_DEFAULT</a>`</font>
<a name="line595">595: </a><font color="#B22222">M*/</font>
<a name="line597">597: </a><font color="#B22222">/*MC</font>
<a name="line598">598: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_NORM_ALWAYS.html">SNES_NORM_ALWAYS</a> - Compute the function and its L2 norm at each iteration.</font>
<a name="line600">600: </a><font color="#B22222"> Level: advanced</font>
<a name="line602">602: </a><font color="#B22222"> Note:</font>
<a name="line603">603: </a><font color="#B22222"> Most solvers will use this no matter what norm type is passed to them.</font>
<a name="line605">605: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>()`, `<a href="../manualpages/SNES/SNES_NORM_NONE.html">SNES_NORM_NONE</a>`</font>
<a name="line606">606: </a><font color="#B22222">M*/</font>
<a name="line608">608: </a><font color="#B22222">/*MC</font>
<a name="line609">609: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_NORM_INITIAL_ONLY.html">SNES_NORM_INITIAL_ONLY</a> - Compute the function and its L2 at iteration 0, but do not update it.</font>
<a name="line611">611: </a><font color="#B22222"> Level: advanced</font>
<a name="line613">613: </a><font color="#B22222"> Notes:</font>
<a name="line614">614: </a><font color="#B22222"> This method is useful in composed methods, when a true solution might actually be found before `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()` is called.</font>
<a name="line615">615: </a><font color="#B22222"> This option enables the solve to abort on the zeroth iteration if this is the case.</font>
<a name="line617">617: </a><font color="#B22222"> For solvers that require the computation of the L2 norm of the function as part of the method, this merely cancels</font>
<a name="line618">618: </a><font color="#B22222"> the norm computation at the last iteration (if possible).</font>
<a name="line620">620: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>()`, `<a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a>`, `<a href="../manualpages/SNES/SNES_NORM_INITIAL_FINAL_ONLY.html">SNES_NORM_INITIAL_FINAL_ONLY</a>`</font>
<a name="line621">621: </a><font color="#B22222">M*/</font>
<a name="line623">623: </a><font color="#B22222">/*MC</font>
<a name="line624">624: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a> - Compute the function and its L2 norm on only the final iteration.</font>
<a name="line626">626: </a><font color="#B22222"> Level: advanced</font>
<a name="line628">628: </a><font color="#B22222"> Note:</font>
<a name="line629">629: </a><font color="#B22222"> For solvers that require the computation of the L2 norm of the function as part of the method, behaves</font>
<a name="line630">630: </a><font color="#B22222"> exactly as `<a href="../manualpages/SNES/SNESNormSchedule.html">SNES_NORM_DEFAULT</a>`. This method is useful when the function is gotten after `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()` and</font>
<a name="line631">631: </a><font color="#B22222"> used in subsequent computation for methods that do not need the norm computed during the rest of the</font>
<a name="line632">632: </a><font color="#B22222"> solution procedure.</font>
<a name="line634">634: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>()`, `<a href="../manualpages/SNES/SNES_NORM_INITIAL_ONLY.html">SNES_NORM_INITIAL_ONLY</a>`, `<a href="../manualpages/SNES/SNES_NORM_INITIAL_FINAL_ONLY.html">SNES_NORM_INITIAL_FINAL_ONLY</a>`</font>
<a name="line635">635: </a><font color="#B22222">M*/</font>
<a name="line637">637: </a><font color="#B22222">/*MC</font>
<a name="line638">638: </a><font color="#B22222"> <a href="../manualpages/SNES/SNES_NORM_INITIAL_FINAL_ONLY.html">SNES_NORM_INITIAL_FINAL_ONLY</a> - Compute the function and its L2 norm on only the initial and final iterations.</font>
<a name="line640">640: </a><font color="#B22222"> Level: advanced</font>
<a name="line642">642: </a><font color="#B22222"> Note:</font>
<a name="line643">643: </a><font color="#B22222"> This method combines the benefits of `<a href="../manualpages/SNES/SNES_NORM_INITIAL_ONLY.html">SNES_NORM_INITIAL_ONLY</a>` and `<a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a>`.</font>
<a name="line645">645: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>()`, `SNES_NORM_SNES_NORM_INITIAL_ONLY`, `<a href="../manualpages/SNES/SNES_NORM_FINAL_ONLY.html">SNES_NORM_FINAL_ONLY</a>`</font>
<a name="line646">646: </a><font color="#B22222">M*/</font>
<a name="line648">648: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetNormSchedule.html">SNESSetNormSchedule</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a>)</font></strong>;
<a name="line649">649: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNormSchedule.html">SNESGetNormSchedule</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNormSchedule.html">SNESNormSchedule</a> *)</font></strong>;
<a name="line650">650: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetFunctionNorm.html">SNESSetFunctionNorm</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line651">651: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetFunctionNorm.html">SNESGetFunctionNorm</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line652">652: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetUpdateNorm.html">SNESGetUpdateNorm</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line653">653: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetSolutionNorm.html">SNESGetSolutionNorm</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line655">655: </a><font color="#B22222">/*E</font>
<a name="line656">656: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESFunctionType.html">SNESFunctionType</a> - Type of function computed</font>
<a name="line658">658: </a><font color="#B22222"> Values:</font>
<a name="line659">659: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_DEFAULT</a>` - the default behavior for the current `<a href="../manualpages/SNES/SNESType.html">SNESType</a>`</font>
<a name="line660">660: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_UNPRECONDITIONED</a>` - the original function provided</font>
<a name="line661">661: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_PRECONDITIONED</a>` - the modification of the function by the preconditioner</font>
<a name="line663">663: </a><font color="#B22222"> Level: advanced</font>
<a name="line665">665: </a><font color="#B22222"> Note:</font>
<a name="line666">666: </a><font color="#B22222"> Support for these is dependent on the solver.</font>
<a name="line668">668: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/KSP/KSPSetNormType.html">KSPSetNormType</a>()`,</font>
<a name="line669">669: </a><font color="#B22222"> `<a href="../manualpages/KSP/KSPSetConvergenceTest.html">KSPSetConvergenceTest</a>()`, `<a href="../manualpages/KSP/KSPSetPCSide.html">KSPSetPCSide</a>()`</font>
<a name="line670">670: </a><font color="#B22222">E*/</font>
<a name="line671">671: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line672">672: </a> <a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_DEFAULT</a> = -1,
<a name="line673">673: </a> <a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_UNPRECONDITIONED</a> = 0,
<a name="line674">674: </a> <a href="../manualpages/SNES/SNESFunctionType.html">SNES_FUNCTION_PRECONDITIONED</a> = 1
<a name="line675">675: </a>} <a href="../manualpages/SNES/SNESFunctionType.html">SNESFunctionType</a>;
<a name="line676">676: </a>PETSC_EXTERN const char *const *const SNESFunctionTypes;
<a name="line678">678: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetFunctionType.html">SNESSetFunctionType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFunctionType.html">SNESFunctionType</a>)</font></strong>;
<a name="line679">679: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetFunctionType.html">SNESGetFunctionType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFunctionType.html">SNESFunctionType</a> *)</font></strong>;
<a name="line681">681: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetNGS.html">SNESSetNGS</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a> *, void *)</font></strong>;
<a name="line682">682: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNGS.html">SNESGetNGS</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a> **, void **)</font></strong>;
<a name="line683">683: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESComputeNGS.html">SNESComputeNGS</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line685">685: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGSSetSweeps.html">SNESNGSSetSweeps</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line686">686: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGSGetSweeps.html">SNESNGSGetSweeps</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line687">687: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGSSetTolerances.html">SNESNGSSetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line688">688: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGSGetTolerances.html">SNESNGSGetTolerances</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line690">690: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetAlwaysComputesFinalResidual.html">SNESSetAlwaysComputesFinalResidual</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line691">691: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetAlwaysComputesFinalResidual.html">SNESGetAlwaysComputesFinalResidual</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line693">693: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESShellGetContext.html">SNESShellGetContext</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, void *)</font></strong>;
<a name="line694">694: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESShellSetContext.html">SNESShellSetContext</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, void *)</font></strong>;
<a name="line695">695: </a><strong><font color="#4169E1"><a name="SNESShellSetSolve"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESShellSetSolve.html">SNESShellSetSolve</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>);
<a name="line697">697: </a><font color="#B22222">/* --------- Routines specifically for line search methods --------------- */</font>
<a name="line699">699: </a><font color="#B22222">/*S</font>
<a name="line700">700: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> - Abstract PETSc object that manages line-search operations for nonlinear solvers</font>
<a name="line702">702: </a><font color="#B22222"> Level: beginner</font>
<a name="line704">704: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESLineSearchType.html">SNESLineSearchType</a>`, `<a href="../manualpages/SNES/SNESLineSearchCreate.html">SNESLineSearchCreate</a>()`, `<a href="../manualpages/SNES/SNESLineSearchSetType.html">SNESLineSearchSetType</a>()`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`</font>
<a name="line705">705: </a><font color="#B22222">S*/</font>
<a name="line706">706: </a><font color="#4169E1">typedef struct _p_LineSearch *<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>;</font>
<a name="line708">708: </a><font color="#B22222">/*J</font>
<a name="line709">709: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearchType.html">SNESLineSearchType</a> - String with the name of a PETSc line search method `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`. Provides all the linesearches for the nonlinear solvers, `<a href="../manualpages/SNES/SNES.html">SNES</a>`,</font>
<a name="line710">710: </a><font color="#B22222"> in PETSc.</font>
<a name="line712">712: </a><font color="#B22222"> Values:</font>
<a name="line713">713: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESLINESEARCHBASIC.html">SNESLINESEARCHBASIC</a>` - (or equivalently `SNESLINESEARCHNONE`) Simple damping line search, defaults to using the full Newton step</font>
<a name="line714">714: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLINESEARCHBT.html">SNESLINESEARCHBT</a>` - Backtracking line search over the L2 norm of the function</font>
<a name="line715">715: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLINESEARCHL2.html">SNESLINESEARCHL2</a>` - Secant line search over the L2 norm of the function</font>
<a name="line716">716: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLINESEARCHCP.html">SNESLINESEARCHCP</a>` - Critical point secant line search assuming $F(x) = \nabla G(x)$ for some unknown $G(x)$</font>
<a name="line717">717: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLINESEARCHNLEQERR.html">SNESLINESEARCHNLEQERR</a>` - Affine-covariant error-oriented linesearch</font>
<a name="line718">718: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESLINESEARCHSHELL.html">SNESLINESEARCHSHELL</a>` - User provided `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>` implementation</font>
<a name="line720">720: </a><font color="#B22222"> Level: beginner</font>
<a name="line722">722: </a><font color="#B22222"> Note:</font>
<a name="line723">723: </a><font color="#B22222"> Use `<a href="../manualpages/SNES/SNESLineSearchSetType.html">SNESLineSearchSetType</a>()` or the options database key `-snes_linesearch_type` to set</font>
<a name="line724">724: </a><font color="#B22222"> the specific line search algorithm to use with a given `<a href="../manualpages/SNES/SNES.html">SNES</a>` object. Not all `<a href="../manualpages/SNES/SNESType.html">SNESType</a>` can utilize a line search.</font>
<a name="line726">726: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`, `<a href="../manualpages/SNES/SNESLineSearchSetType.html">SNESLineSearchSetType</a>()`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`</font>
<a name="line727">727: </a><font color="#B22222">J*/</font>
<a name="line728">728: </a><font color="#4169E1">typedef const char *<a href="../manualpages/SNES/SNESLineSearchType.html">SNESLineSearchType</a>;</font>
<a name="line729">729: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHBT.html">SNESLINESEARCHBT</a> </font><font color="#666666">"bt"</font><font color="#228B22"></font></strong>
<a name="line730">730: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHNLEQERR.html">SNESLINESEARCHNLEQERR</a> </font><font color="#666666">"nleqerr"</font><font color="#228B22"></font></strong>
<a name="line731">731: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHBASIC.html">SNESLINESEARCHBASIC</a> </font><font color="#666666">"basic"</font><font color="#228B22"></font></strong>
<a name="line732">732: </a><strong><font color="#228B22">#define SNESLINESEARCHNONE </font><font color="#666666">"none"</font><font color="#228B22"></font></strong>
<a name="line733">733: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHL2.html">SNESLINESEARCHL2</a> </font><font color="#666666">"l2"</font><font color="#228B22"></font></strong>
<a name="line734">734: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHCP.html">SNESLINESEARCHCP</a> </font><font color="#666666">"cp"</font><font color="#228B22"></font></strong>
<a name="line735">735: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHSHELL.html">SNESLINESEARCHSHELL</a> </font><font color="#666666">"shell"</font><font color="#228B22"></font></strong>
<a name="line736">736: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHNCGLINEAR.html">SNESLINESEARCHNCGLINEAR</a> </font><font color="#666666">"ncglinear"</font><font color="#228B22"></font></strong>
<a name="line737">737: </a><strong><font color="#228B22">#define <a href="../manualpages/SNES/SNESLINESEARCHBISECTION.html">SNESLINESEARCHBISECTION</a> </font><font color="#666666">"bisection"</font><font color="#228B22"></font></strong>
<a name="line739">739: </a>PETSC_EXTERN <a href="../manualpages/Sys/PetscFunctionList.html">PetscFunctionList</a> SNESList;
<a name="line740">740: </a>PETSC_EXTERN <a href="../manualpages/Sys/PetscClassId.html">PetscClassId</a> SNESLINESEARCH_CLASSID;
<a name="line741">741: </a>PETSC_EXTERN <a href="../manualpages/Sys/PetscFunctionList.html">PetscFunctionList</a> SNESLineSearchList;
<a name="line743">743: </a><strong><font color="#228B22">#define SNES_LINESEARCH_ORDER_LINEAR 1</font></strong>
<a name="line744">744: </a><strong><font color="#228B22">#define SNES_LINESEARCH_ORDER_QUADRATIC 2</font></strong>
<a name="line745">745: </a><strong><font color="#228B22">#define SNES_LINESEARCH_ORDER_CUBIC 3</font></strong>
<a name="line747">747: </a><font color="#B22222">/*S</font>
<a name="line748">748: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` function that projects a vector onto the VI bounds, passed to `<a href="../manualpages/SNES/SNESLineSearchSetVIFunctions.html">SNESLineSearchSetVIFunctions</a>()`</font>
<a name="line750">750: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line751">751: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line752">752: </a><font color="#B22222">- u - the vector to project to the bounds</font>
<a name="line754">754: </a><font color="#B22222"> Level: advanced</font>
<a name="line756">756: </a><font color="#B22222"> Note:</font>
<a name="line757">757: </a><font color="#B22222"> The deprecated `SNESLineSearchVIProjectFunc` still works as a replacement for `<a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a>` *.</font>
<a name="line759">759: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`</font>
<a name="line760">760: </a><font color="#B22222">S*/</font>
<a name="line761">761: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> u)</font></strong>;
<a name="line762">762: </a>PETSC_EXTERN_TYPEDEF <font color="#4169E1">typedef</font> <a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a> *SNESLineSearchVIProjectFunc; <font color="#B22222">// deprecated</font>
<a name="line764">764: </a><font color="#B22222">/*S</font>
<a name="line765">765: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` function that computes the norm of the active set variables in a vector in a VI solve,</font>
<a name="line766">766: </a><font color="#B22222"> passed to `<a href="../manualpages/SNES/SNESLineSearchSetVIFunctions.html">SNESLineSearchSetVIFunctions</a>()`</font>
<a name="line768">768: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line769">769: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line770">770: </a><font color="#B22222">. f - the vector to compute the norm of</font>
<a name="line771">771: </a><font color="#B22222">. u - the current solution, entries that are on the VI bounds are ignored</font>
<a name="line772">772: </a><font color="#B22222">- fnorm - the resulting norm</font>
<a name="line774">774: </a><font color="#B22222"> Level: advanced</font>
<a name="line776">776: </a><font color="#B22222"> Note:</font>
<a name="line777">777: </a><font color="#B22222"> The deprecated `SNESLineSearchVINormFunc` still works as a replacement for `SNESLineSearchVINormFn` *.</font>
<a name="line779">779: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`</font>
<a name="line780">780: </a><font color="#B22222">S*/</font>
<a name="line781">781: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(SNESLineSearchVINormFn)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> f, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *fnorm)</font></strong>;
<a name="line782">782: </a>PETSC_EXTERN_TYPEDEF <font color="#4169E1">typedef</font> SNESLineSearchVINormFn *SNESLineSearchVINormFunc; <font color="#B22222">// deprecated</font>
<a name="line784">784: </a><font color="#B22222">/*S</font>
<a name="line785">785: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearchVIDirDerivFn.html">SNESLineSearchVIDirDerivFn</a> - A prototype of a `<a href="../manualpages/SNES/SNES.html">SNES</a>` function that computes the directional derivative considering the VI bounds, passed to `<a href="../manualpages/SNES/SNESLineSearchSetVIFunctions.html">SNESLineSearchSetVIFunctions</a>()`</font>
<a name="line787">787: </a><font color="#B22222"> Calling Sequence:</font>
<a name="line788">788: </a><font color="#B22222">+ snes - `<a href="../manualpages/SNES/SNES.html">SNES</a>` context</font>
<a name="line789">789: </a><font color="#B22222">. f - the function vector to compute the directional derivative with</font>
<a name="line790">790: </a><font color="#B22222">. u - the current solution, entries that are on the VI bounds are ignored</font>
<a name="line791">791: </a><font color="#B22222">. y - the direction to compute the directional derivative</font>
<a name="line792">792: </a><font color="#B22222">- fty - the resulting directional derivative</font>
<a name="line794">794: </a><font color="#B22222"> Level: advanced</font>
<a name="line796">796: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>`, `<a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a>`, `<a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a>`, `<a href="../manualpages/SNES/SNESLineSearchSetVIFunctions.html">SNESLineSearchSetVIFunctions</a>()`, `<a href="../manualpages/SNES/SNESLineSearchGetVIFunctions.html">SNESLineSearchGetVIFunctions</a>()`</font>
<a name="line797">797: </a><font color="#B22222">S*/</font>
<a name="line798">798: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(<a href="../manualpages/SNES/SNESLineSearchVIDirDerivFn.html">SNESLineSearchVIDirDerivFn</a>)(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/Vec/Vec.html">Vec</a> f, <a href="../manualpages/Vec/Vec.html">Vec</a> u, <a href="../manualpages/Vec/Vec.html">Vec</a> y, <a href="../manualpages/Sys/PetscScalar.html">PetscScalar</a> *fty)</font></strong>;
<a name="line800">800: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(SNESLineSearchApplyFn)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line801">801: </a>PETSC_EXTERN_TYPEDEF <font color="#4169E1">typedef</font> SNESLineSearchApplyFn *SNESLineSearchApplyFunc; <font color="#B22222">// deprecated</font>
<a name="line802">802: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(SNESLineSearchShellApplyFn)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, void *)</font></strong>;
<a name="line803">803: </a>PETSC_EXTERN_TYPEDEF <font color="#4169E1">typedef</font> SNESLineSearchShellApplyFn *SNESLineSearchUserFunc; <font color="#B22222">// deprecated</font>
<a name="line805">805: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchCreate.html">SNESLineSearchCreate</a>(<a href="../manualpages/Sys/MPI_Comm.html">MPI_Comm</a>, <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> *)</font></strong>;
<a name="line806">806: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchReset.html">SNESLineSearchReset</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line807">807: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchView.html">SNESLineSearchView</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>)</font></strong>;
<a name="line808">808: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchDestroy.html">SNESLineSearchDestroy</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> *)</font></strong>;
<a name="line809">809: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetType.html">SNESLineSearchGetType</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchType.html">SNESLineSearchType</a> *)</font></strong>;
<a name="line810">810: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetType.html">SNESLineSearchSetType</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchType.html">SNESLineSearchType</a>)</font></strong>;
<a name="line811">811: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetFromOptions.html">SNESLineSearchSetFromOptions</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line812">812: </a><strong><font color="#4169E1"><a name="SNESLineSearchSetFunction"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetFunction.html">SNESLineSearchSetFunction</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>);
<a name="line813">813: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetUp.html">SNESLineSearchSetUp</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line814">814: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchApply.html">SNESLineSearchApply</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line815">815: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchPreCheck.html">SNESLineSearchPreCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line816">816: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchPostCheck.html">SNESLineSearchPostCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line817">817: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetWorkVecs.html">SNESLineSearchSetWorkVecs</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line819">819: </a><font color="#B22222">/* set the functions for precheck and postcheck */</font>
<a name="line821">821: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetPreCheck.html">SNESLineSearchSetPreCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line822">822: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetPostCheck.html">SNESLineSearchSetPostCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void *ctx)</font></strong>;
<a name="line824">824: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetPreCheck.html">SNESLineSearchGetPreCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line825">825: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetPostCheck.html">SNESLineSearchGetPostCheck</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *), void **ctx)</font></strong>;
<a name="line827">827: </a><font color="#B22222">/* set the functions for VI-specific line search operations */</font>
<a name="line829">829: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetVIFunctions.html">SNESLineSearchSetVIFunctions</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a> *, SNESLineSearchVINormFn *, <a href="../manualpages/SNES/SNESLineSearchVIDirDerivFn.html">SNESLineSearchVIDirDerivFn</a> *)</font></strong>;
<a name="line830">830: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetVIFunctions.html">SNESLineSearchGetVIFunctions</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchVIProjectFn.html">SNESLineSearchVIProjectFn</a> **, SNESLineSearchVINormFn **, <a href="../manualpages/SNES/SNESLineSearchVIDirDerivFn.html">SNESLineSearchVIDirDerivFn</a> **)</font></strong>;
<a name="line832">832: </a><font color="#B22222">/* pointers to the associated <a href="../manualpages/SNES/SNES.html">SNES</a> in order to be able to get the function evaluation out */</font>
<a name="line833">833: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetSNES.html">SNESLineSearchSetSNES</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line834">834: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetSNES.html">SNESLineSearchGetSNES</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line836">836: </a><font color="#B22222">/* set and get the parameters and vectors */</font>
<a name="line837">837: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetTolerances.html">SNESLineSearchGetTolerances</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line838">838: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetTolerances.html">SNESLineSearchSetTolerances</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line840">840: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchPreCheckPicard.html">SNESLineSearchPreCheckPicard</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, void *)</font></strong>;
<a name="line842">842: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetLambda.html">SNESLineSearchGetLambda</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line843">843: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetLambda.html">SNESLineSearchSetLambda</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line845">845: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetDamping.html">SNESLineSearchGetDamping</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line846">846: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetDamping.html">SNESLineSearchSetDamping</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line848">848: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetOrder.html">SNESLineSearchGetOrder</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line849">849: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetOrder.html">SNESLineSearchSetOrder</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line851">851: </a><font color="#B22222">/*E</font>
<a name="line852">852: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNESLineSearchReason</a> - indication if the line search has succeeded or failed and why</font>
<a name="line854">854: </a><font color="#B22222"> Values:</font>
<a name="line855">855: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_SUCCEEDED</a>` - the line search succeeded</font>
<a name="line856">856: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_NANORINF</a>` - a not a number of infinity appeared in the computions</font>
<a name="line857">857: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_DOMAIN</a>` - the function was evaluated outside of its domain, see `<a href="../manualpages/SNES/SNESSetFunctionDomainError.html">SNESSetFunctionDomainError</a>()` and `<a href="../manualpages/SNES/SNESSetJacobianDomainError.html">SNESSetJacobianDomainError</a>()`</font>
<a name="line858">858: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_REDUCT</a>` - the linear search failed to get the requested decrease in its norm or objective</font>
<a name="line859">859: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_USER</a>` - used by `<a href="../manualpages/SNES/SNESLINESEARCHNLEQERR.html">SNESLINESEARCHNLEQERR</a>` to indicate the user changed the search direction inappropriately</font>
<a name="line860">860: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_FUNCTION</a>` - indicates the maximum number of function evaluations allowed has been surpassed, `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>` is also</font>
<a name="line861">861: </a><font color="#B22222"> set to `<a href="../manualpages/SNES/SNES_DIVERGED_FUNCTION_COUNT.html">SNES_DIVERGED_FUNCTION_COUNT</a>`</font>
<a name="line863">863: </a><font color="#B22222"> Level: intermediate</font>
<a name="line865">865: </a><font color="#B22222"> Developer Note:</font>
<a name="line866">866: </a><font color="#B22222"> Some of these reasons overlap with values of `<a href="../manualpages/SNES/SNESConvergedReason.html">SNESConvergedReason</a>`</font>
<a name="line868">868: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESSolve.html">SNESSolve</a>()`, `<a href="../manualpages/SNES/SNESGetConvergedReason.html">SNESGetConvergedReason</a>()`, `<a href="../manualpages/KSP/KSPConvergedReason.html">KSPConvergedReason</a>`, `<a href="../manualpages/SNES/SNESSetConvergenceTest.html">SNESSetConvergenceTest</a>()`,</font>
<a name="line869">869: </a><font color="#B22222"> `<a href="../manualpages/SNES/SNESSetFunctionDomainError.html">SNESSetFunctionDomainError</a>()` and `<a href="../manualpages/SNES/SNESSetJacobianDomainError.html">SNESSetJacobianDomainError</a>()`</font>
<a name="line870">870: </a><font color="#B22222">E*/</font>
<a name="line871">871: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line872">872: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_SUCCEEDED</a>,
<a name="line873">873: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_NANORINF</a>,
<a name="line874">874: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_DOMAIN</a>,
<a name="line875">875: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_REDUCT</a>, <font color="#B22222">/* INSUFFICIENT REDUCTION */</font>
<a name="line876">876: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_USER</a>,
<a name="line877">877: </a> <a href="../manualpages/SNES/SNESLineSearchReason.html">SNES_LINESEARCH_FAILED_FUNCTION</a>
<a name="line878">878: </a>} <a href="../manualpages/SNES/SNESLineSearchReason.html">SNESLineSearchReason</a>;
<a name="line880">880: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetReason.html">SNESLineSearchGetReason</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchReason.html">SNESLineSearchReason</a> *)</font></strong>;
<a name="line881">881: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetReason.html">SNESLineSearchSetReason</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/SNES/SNESLineSearchReason.html">SNESLineSearchReason</a>)</font></strong>;
<a name="line883">883: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetVecs.html">SNESLineSearchGetVecs</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line884">884: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetVecs.html">SNESLineSearchSetVecs</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line886">886: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetNorms.html">SNESLineSearchGetNorms</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line887">887: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetNorms.html">SNESLineSearchSetNorms</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line888">888: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchComputeNorms.html">SNESLineSearchComputeNorms</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line889">889: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetComputeNorms.html">SNESLineSearchSetComputeNorms</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line891">891: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchMonitor.html">SNESLineSearchMonitor</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line892">892: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchMonitorSet.html">SNESLineSearchMonitorSet</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, void *), void *, <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line893">893: </a><strong><font color="#4169E1"><a name="SNESLineSearchMonitorSetFromOptions"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchMonitorSetFromOptions.html">SNESLineSearchMonitorSetFromOptions</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, const char[], const char[], const char[], <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, PetscViewerAndFormat *), <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, PetscViewerAndFormat *)</font></strong>);
<a name="line894">894: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchMonitorCancel.html">SNESLineSearchMonitorCancel</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line895">895: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchSetDefaultMonitor.html">SNESLineSearchSetDefaultMonitor</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a>)</font></strong>;
<a name="line896">896: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetDefaultMonitor.html">SNESLineSearchGetDefaultMonitor</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Viewer/PetscViewer.html">PetscViewer</a> *)</font></strong>;
<a name="line897">897: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchMonitorSolutionUpdate.html">SNESLineSearchMonitorSolutionUpdate</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, PetscViewerAndFormat *)</font></strong>;
<a name="line899">899: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchAppendOptionsPrefix.html">SNESLineSearchAppendOptionsPrefix</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, const char[])</font></strong>;
<a name="line900">900: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchGetOptionsPrefix.html">SNESLineSearchGetOptionsPrefix</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, const char *[])</font></strong>;
<a name="line902">902: </a><font color="#B22222">/* Shell interface functions */</font>
<a name="line903">903: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchShellSetApply.html">SNESLineSearchShellSetApply</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, SNESLineSearchShellApplyFn, void *)</font></strong>;
<a name="line904">904: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchShellGetApply.html">SNESLineSearchShellGetApply</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, SNESLineSearchShellApplyFn **, void **)</font></strong>;
<a name="line906">906: </a>PETSC_DEPRECATED_FUNCTION(3, 21, 0, <font color="#666666">"SNESLinesearchShellSetApply()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESLineSearchShellSetUserFunc(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> ls, SNESLineSearchUserFunc f, void *ctx)
<a name="line907">907: </a>{
<a name="line908">908: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESLineSearchShellSetApply.html">SNESLineSearchShellSetApply</a>(ls, f, ctx);
<a name="line909">909: </a>}
<a name="line911">911: </a>PETSC_DEPRECATED_FUNCTION(3, 21, 0, <font color="#666666">"SNESLinesearchShellGetApply()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESLineSearchShellGetUserFunc(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> ls, SNESLineSearchUserFunc *f, void **ctx)
<a name="line912">912: </a>{
<a name="line913">913: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESLineSearchShellGetApply.html">SNESLineSearchShellGetApply</a>(ls, f, ctx);
<a name="line914">914: </a>}
<a name="line916">916: </a><font color="#B22222">/* BT interface functions */</font>
<a name="line917">917: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchBTSetAlpha.html">SNESLineSearchBTSetAlpha</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line918">918: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchBTGetAlpha.html">SNESLineSearchBTGetAlpha</a>(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line920">920: </a><font color="#B22222">/*register line search types */</font>
<a name="line921">921: </a><strong><font color="#4169E1"><a name="SNESLineSearchRegister"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESLineSearchRegister.html">SNESLineSearchRegister</a>(const char[], <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>);
<a name="line923">923: </a><font color="#B22222">/* Routines for VI solver */</font>
<a name="line924">924: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVISetVariableBounds.html">SNESVISetVariableBounds</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line925">925: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIGetVariableBounds.html">SNESVIGetVariableBounds</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line926">926: </a><strong><font color="#4169E1"><a name="SNESVISetComputeVariableBounds"></a>PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVISetComputeVariableBounds.html">SNESVISetComputeVariableBounds</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>);
<a name="line927">927: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIGetInactiveSet.html">SNESVIGetInactiveSet</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/IS/IS.html">IS</a> *)</font></strong>;
<a name="line928">928: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIGetActiveSetIS.html">SNESVIGetActiveSetIS</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/IS/IS.html">IS</a> *)</font></strong>;
<a name="line929">929: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIComputeInactiveSetFnorm.html">SNESVIComputeInactiveSetFnorm</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line930">930: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIComputeInactiveSetFtY.html">SNESVIComputeInactiveSetFtY</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscScalar.html">PetscScalar</a> *)</font></strong>;
<a name="line931">931: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVISetRedundancyCheck.html">SNESVISetRedundancyCheck</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/IS/IS.html">IS</a>, <a href="../manualpages/IS/IS.html">IS</a> *, void *), void *)</font></strong>;
<a name="line932">932: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIComputeMeritFunction.html">SNESVIComputeMeritFunction</a>(<a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line933">933: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESVIComputeFunction.html">SNESVIComputeFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *)</font></strong>;
<a name="line934">934: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSetVI.html">DMSetVI</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/IS/IS.html">IS</a>)</font></strong>;
<a name="line935">935: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> DMDestroyVI(<a href="../manualpages/DM/DM.html">DM</a>)</font></strong>;
<a name="line937">937: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESTestLocalMin(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line939">939: </a><font color="#B22222">/* Should this routine be private? */</font>
<a name="line940">940: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESComputeJacobian.html">SNESComputeJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>)</font></strong>;
<a name="line941">941: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESTestJacobian(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line942">942: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESTestFunction(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line944">944: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetDM.html">SNESSetDM</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/DM/DM.html">DM</a>)</font></strong>;
<a name="line945">945: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetDM.html">SNESGetDM</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/DM/DM.html">DM</a> *)</font></strong>;
<a name="line946">946: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetNPC.html">SNESSetNPC</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line947">947: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNPC.html">SNESGetNPC</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line948">948: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESHasNPC.html">SNESHasNPC</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line949">949: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESApplyNPC.html">SNESApplyNPC</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line950">950: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNPCFunction.html">SNESGetNPCFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line951">951: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESComputeFunctionDefaultNPC(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line952">952: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetNPCSide.html">SNESSetNPCSide</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCSide.html">PCSide</a>)</font></strong>;
<a name="line953">953: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetNPCSide.html">SNESGetNPCSide</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCSide.html">PCSide</a> *)</font></strong>;
<a name="line954">954: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetLineSearch.html">SNESSetLineSearch</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a>)</font></strong>;
<a name="line955">955: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESGetLineSearch.html">SNESGetLineSearch</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> *)</font></strong>;
<a name="line957">957: </a>PETSC_DEPRECATED_FUNCTION(3, 4, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESGetLineSearch.html">SNESGetLineSearch</a>()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESGetSNESLineSearch(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> *ls)
<a name="line958">958: </a>{
<a name="line959">959: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESGetLineSearch.html">SNESGetLineSearch</a>(snes, ls);
<a name="line960">960: </a>}
<a name="line961">961: </a>PETSC_DEPRECATED_FUNCTION(3, 4, 0, <font color="#666666">"<a href="../manualpages/SNES/SNESSetLineSearch.html">SNESSetLineSearch</a>()"</font>, ) static inline <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESSetSNESLineSearch(<a href="../manualpages/SNES/SNES.html">SNES</a> snes, <a href="../manualpages/SNES/SNESLineSearch.html">SNESLineSearch</a> ls)
<a name="line962">962: </a>{
<a name="line963">963: </a> <font color="#4169E1">return</font> <a href="../manualpages/SNES/SNESSetLineSearch.html">SNESSetLineSearch</a>(snes, ls);
<a name="line964">964: </a>}
<a name="line966">966: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESSetUpMatrices.html">SNESSetUpMatrices</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line967">967: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetFunction.html">DMSNESSetFunction</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, void *)</font></strong>;
<a name="line968">968: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetFunction.html">DMSNESGetFunction</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> **, void **)</font></strong>;
<a name="line969">969: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetFunctionContextDestroy.html">DMSNESSetFunctionContextDestroy</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line970">970: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetMFFunction.html">DMSNESSetMFFunction</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, void *)</font></strong>;
<a name="line971">971: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetNGS.html">DMSNESSetNGS</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a> *, void *)</font></strong>;
<a name="line972">972: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetNGS.html">DMSNESGetNGS</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESNGSFn.html">SNESNGSFn</a> **, void **)</font></strong>;
<a name="line973">973: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetJacobian.html">DMSNESSetJacobian</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> *, void *)</font></strong>;
<a name="line974">974: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetJacobian.html">DMSNESGetJacobian</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> **, void **)</font></strong>;
<a name="line975">975: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetJacobianContextDestroy.html">DMSNESSetJacobianContextDestroy</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscCtxDestroyFn.html">PetscCtxDestroyFn</a> *)</font></strong>;
<a name="line976">976: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetPicard.html">DMSNESSetPicard</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> *, void *)</font></strong>;
<a name="line977">977: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetPicard.html">DMSNESGetPicard</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> **, <a href="../manualpages/SNES/SNESJacobianFn.html">SNESJacobianFn</a> **, void **)</font></strong>;
<a name="line978">978: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetObjective.html">DMSNESSetObjective</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a> *, void *)</font></strong>;
<a name="line979">979: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetObjective.html">DMSNESGetObjective</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNESObjectiveFn.html">SNESObjectiveFn</a> **, void **)</font></strong>;
<a name="line980">980: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMCopyDMSNES.html">DMCopyDMSNES</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/DM/DM.html">DM</a>)</font></strong>;
<a name="line982">982: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESFunctionFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, void *, void *, void *)</font></strong>;
<a name="line983">983: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESJacobianFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, void *, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, void *)</font></strong>;
<a name="line984">984: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESObjectiveFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, void *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, void *)</font></strong>;
<a name="line986">986: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESFunctionVecFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *)</font></strong>;
<a name="line987">987: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESJacobianVecFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, void *)</font></strong>;
<a name="line988">988: </a><strong><font color="#4169E1">PETSC_EXTERN_TYPEDEF typedef <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a>(DMDASNESObjectiveVecFn)(<a href="../manualpages/DMDA/DMDALocalInfo.html">DMDALocalInfo</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, void *)</font></strong>;
<a name="line990">990: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetFunctionLocal.html">DMDASNESSetFunctionLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/InsertMode.html">InsertMode</a>, DMDASNESFunctionFn *, void *)</font></strong>;
<a name="line991">991: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetJacobianLocal.html">DMDASNESSetJacobianLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, DMDASNESJacobianFn *, void *)</font></strong>;
<a name="line992">992: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetObjectiveLocal.html">DMDASNESSetObjectiveLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, DMDASNESObjectiveFn *, void *)</font></strong>;
<a name="line993">993: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetPicardLocal.html">DMDASNESSetPicardLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/InsertMode.html">InsertMode</a>, DMDASNESFunctionFn *, DMDASNESJacobianFn, void *)</font></strong>;
<a name="line995">995: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetFunctionLocalVec.html">DMDASNESSetFunctionLocalVec</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/InsertMode.html">InsertMode</a>, DMDASNESFunctionVecFn *, void *)</font></strong>;
<a name="line996">996: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetJacobianLocalVec.html">DMDASNESSetJacobianLocalVec</a>(<a href="../manualpages/DM/DM.html">DM</a>, DMDASNESJacobianVecFn *, void *)</font></strong>;
<a name="line997">997: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMDASNESSetObjectiveLocalVec.html">DMDASNESSetObjectiveLocalVec</a>(<a href="../manualpages/DM/DM.html">DM</a>, DMDASNESObjectiveVecFn *, void *)</font></strong>;
<a name="line999">999: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetBoundaryLocal.html">DMSNESSetBoundaryLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *), void *)</font></strong>;
<a name="line1000">1000: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetObjectiveLocal.html">DMSNESSetObjectiveLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, void *), void *)</font></strong>;
<a name="line1001">1001: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetFunctionLocal.html">DMSNESSetFunctionLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *), void *)</font></strong>;
<a name="line1002">1002: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESSetJacobianLocal.html">DMSNESSetJacobianLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, void *), void *)</font></strong>;
<a name="line1003">1003: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetBoundaryLocal.html">DMSNESGetBoundaryLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *), void **)</font></strong>;
<a name="line1004">1004: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetObjectiveLocal.html">DMSNESGetObjectiveLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *, void *), void **)</font></strong>;
<a name="line1005">1005: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetFunctionLocal.html">DMSNESGetFunctionLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *), void **)</font></strong>;
<a name="line1006">1006: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESGetJacobianLocal.html">DMSNESGetJacobianLocal</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (**)(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, void *), void **)</font></strong>;
<a name="line1008">1008: </a><font color="#B22222">/* Routines for Multiblock solver */</font>
<a name="line1009">1009: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMultiblockSetFields.html">SNESMultiblockSetFields</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[], <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line1010">1010: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMultiblockSetIS.html">SNESMultiblockSetIS</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, const char[], <a href="../manualpages/IS/IS.html">IS</a>)</font></strong>;
<a name="line1011">1011: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMultiblockSetBlockSize.html">SNESMultiblockSetBlockSize</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line1012">1012: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMultiblockSetType.html">SNESMultiblockSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCCompositeType.html">PCCompositeType</a>)</font></strong>;
<a name="line1013">1013: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMultiblockGetSubSNES.html">SNESMultiblockGetSubSNES</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/SNES/SNES.html">SNES</a> *[])</font></strong>;
<a name="line1015">1015: </a><font color="#B22222">/*J</font>
<a name="line1016">1016: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESMSType.html">SNESMSType</a> - String with the name of a PETSc `<a href="../manualpages/SNES/SNESMS.html">SNESMS</a>` method.</font>
<a name="line1018">1018: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1020">1020: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNES/SNESMS.html">SNESMS</a>`, `<a href="../manualpages/SNES/SNESMSGetType.html">SNESMSGetType</a>()`, `<a href="../manualpages/SNES/SNESMSSetType.html">SNESMSSetType</a>()`, `<a href="../manualpages/SNES/SNES.html">SNES</a>`</font>
<a name="line1021">1021: </a><font color="#B22222">J*/</font>
<a name="line1022">1022: </a><font color="#4169E1">typedef const char *<a href="../manualpages/SNES/SNESMSType.html">SNESMSType</a>;</font>
<a name="line1023">1023: </a><strong><font color="#228B22">#define SNESMSM62 </font><font color="#666666">"m62"</font><font color="#228B22"></font></strong>
<a name="line1024">1024: </a><strong><font color="#228B22">#define SNESMSEULER </font><font color="#666666">"euler"</font><font color="#228B22"></font></strong>
<a name="line1025">1025: </a><strong><font color="#228B22">#define SNESMSJAMESON83 </font><font color="#666666">"jameson83"</font><font color="#228B22"></font></strong>
<a name="line1026">1026: </a><strong><font color="#228B22">#define SNESMSVLTP11 </font><font color="#666666">"vltp11"</font><font color="#228B22"></font></strong>
<a name="line1027">1027: </a><strong><font color="#228B22">#define SNESMSVLTP21 </font><font color="#666666">"vltp21"</font><font color="#228B22"></font></strong>
<a name="line1028">1028: </a><strong><font color="#228B22">#define SNESMSVLTP31 </font><font color="#666666">"vltp31"</font><font color="#228B22"></font></strong>
<a name="line1029">1029: </a><strong><font color="#228B22">#define SNESMSVLTP41 </font><font color="#666666">"vltp41"</font><font color="#228B22"></font></strong>
<a name="line1030">1030: </a><strong><font color="#228B22">#define SNESMSVLTP51 </font><font color="#666666">"vltp51"</font><font color="#228B22"></font></strong>
<a name="line1031">1031: </a><strong><font color="#228B22">#define SNESMSVLTP61 </font><font color="#666666">"vltp61"</font><font color="#228B22"></font></strong>
<a name="line1033">1033: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSRegister.html">SNESMSRegister</a>(<a href="../manualpages/SNES/SNESMSType.html">SNESMSType</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, const <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>[], const <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>[], const <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>[])</font></strong>;
<a name="line1034">1034: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSRegisterAll.html">SNESMSRegisterAll</a>(void)</font></strong>;
<a name="line1035">1035: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSGetType.html">SNESMSGetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESMSType.html">SNESMSType</a> *)</font></strong>;
<a name="line1036">1036: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSSetType.html">SNESMSSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESMSType.html">SNESMSType</a>)</font></strong>;
<a name="line1037">1037: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSGetDamping.html">SNESMSGetDamping</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line1038">1038: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSSetDamping.html">SNESMSSetDamping</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line1039">1039: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSFinalizePackage.html">SNESMSFinalizePackage</a>(void)</font></strong>;
<a name="line1040">1040: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSInitializePackage.html">SNESMSInitializePackage</a>(void)</font></strong>;
<a name="line1041">1041: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESMSRegisterDestroy.html">SNESMSRegisterDestroy</a>(void)</font></strong>;
<a name="line1043">1043: </a><font color="#B22222">/*MC</font>
<a name="line1044">1044: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNGMRESRestartType.html">SNESNGMRESRestartType</a> - the restart approach used by `<a href="../manualpages/SNES/SNESNGMRES.html">SNESNGMRES</a>`</font>
<a name="line1046">1046: </a><font color="#B22222"> Values:</font>
<a name="line1047">1047: </a><font color="#B22222">+ `SNES_NGMRES_RESTART_NONE` - never restart</font>
<a name="line1048">1048: </a><font color="#B22222">. `SNES_NGMRES_RESTART_DIFFERENCE` - restart based upon difference criteria</font>
<a name="line1049">1049: </a><font color="#B22222">- `SNES_NGMRES_RESTART_PERIODIC` - restart after a fixed number of iterations</font>
<a name="line1051">1051: </a><font color="#B22222"> Options Database Keys:</font>
<a name="line1052">1052: </a><font color="#B22222">+ -snes_ngmres_restart_type <difference,periodic,none> - set the restart type</font>
<a name="line1053">1053: </a><font color="#B22222">- -snes_ngmres_restart <30> - sets the number of iterations before restart for periodic</font>
<a name="line1055">1055: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1057">1057: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESNGMRES.html">SNESNGMRES</a>`, `<a href="../manualpages/SNES/SNESNGMRESSetSelectType.html">SNESNGMRESSetSelectType</a>()`, `SNESNGMRESGetSelectType()`, `<a href="../manualpages/SNES/SNESNGMRESSetRestartType.html">SNESNGMRESSetRestartType</a>()`,</font>
<a name="line1058">1058: </a><font color="#B22222"> `SNESNGMRESGetRestartType()`, `<a href="../manualpages/SNES/SNESNGMRESSelectType.html">SNESNGMRESSelectType</a>`</font>
<a name="line1059">1059: </a><font color="#B22222">M*/</font>
<a name="line1060">1060: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1061">1061: </a> SNES_NGMRES_RESTART_NONE = 0,
<a name="line1062">1062: </a> SNES_NGMRES_RESTART_PERIODIC = 1,
<a name="line1063">1063: </a> SNES_NGMRES_RESTART_DIFFERENCE = 2
<a name="line1064">1064: </a>} <a href="../manualpages/SNES/SNESNGMRESRestartType.html">SNESNGMRESRestartType</a>;
<a name="line1065">1065: </a>PETSC_EXTERN const char *const SNESNGMRESRestartTypes[];
<a name="line1067">1067: </a><font color="#B22222">/*MC</font>
<a name="line1068">1068: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNGMRESSelectType.html">SNESNGMRESSelectType</a> - the approach used by `<a href="../manualpages/SNES/SNESNGMRES.html">SNESNGMRES</a>` to determine how the candidate solution and</font>
<a name="line1069">1069: </a><font color="#B22222"> combined solution are used to create the next iterate.</font>
<a name="line1071">1071: </a><font color="#B22222"> Values:</font>
<a name="line1072">1072: </a><font color="#B22222">+ `SNES_NGMRES_SELECT_NONE` - choose the combined solution all the time</font>
<a name="line1073">1073: </a><font color="#B22222">. `SNES_NGMRES_SELECT_DIFFERENCE` - choose based upon the selection criteria</font>
<a name="line1074">1074: </a><font color="#B22222">- `SNES_NGMRES_SELECT_LINESEARCH` - choose based upon line search combination</font>
<a name="line1076">1076: </a><font color="#B22222"> Options Database Key:</font>
<a name="line1077">1077: </a><font color="#B22222">. -snes_ngmres_select_type<difference,none,linesearch> - select type</font>
<a name="line1079">1079: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1081">1081: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESNGMRES.html">SNESNGMRES</a>`, `<a href="../manualpages/SNES/SNESNGMRESSetSelectType.html">SNESNGMRESSetSelectType</a>()`, `SNESNGMRESGetSelectType()`, `<a href="../manualpages/SNES/SNESNGMRESSetRestartType.html">SNESNGMRESSetRestartType</a>()`,</font>
<a name="line1082">1082: </a><font color="#B22222"> `SNESNGMRESGetRestartType()`, `<a href="../manualpages/SNES/SNESNGMRESRestartType.html">SNESNGMRESRestartType</a>`</font>
<a name="line1083">1083: </a><font color="#B22222">M*/</font>
<a name="line1084">1084: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1085">1085: </a> SNES_NGMRES_SELECT_NONE = 0,
<a name="line1086">1086: </a> SNES_NGMRES_SELECT_DIFFERENCE = 1,
<a name="line1087">1087: </a> SNES_NGMRES_SELECT_LINESEARCH = 2
<a name="line1088">1088: </a>} <a href="../manualpages/SNES/SNESNGMRESSelectType.html">SNESNGMRESSelectType</a>;
<a name="line1089">1089: </a>PETSC_EXTERN const char *const SNESNGMRESSelectTypes[];
<a name="line1091">1091: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGMRESSetRestartType.html">SNESNGMRESSetRestartType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNGMRESRestartType.html">SNESNGMRESRestartType</a>)</font></strong>;
<a name="line1092">1092: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGMRESSetSelectType.html">SNESNGMRESSetSelectType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNGMRESSelectType.html">SNESNGMRESSelectType</a>)</font></strong>;
<a name="line1093">1093: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNGMRESSetRestartFmRise.html">SNESNGMRESSetRestartFmRise</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1094">1094: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESNGMRESGetRestartFmRise(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line1096">1096: </a><font color="#B22222">/*MC</font>
<a name="line1097">1097: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNCGType.html">SNESNCGType</a> - the conjugate update approach for `<a href="../manualpages/SNES/SNESNCG.html">SNESNCG</a>`</font>
<a name="line1099">1099: </a><font color="#B22222"> Values:</font>
<a name="line1100">1100: </a><font color="#B22222">+ `SNES_NCG_FR` - Fletcher-Reeves update</font>
<a name="line1101">1101: </a><font color="#B22222">. `SNES_NCG_PRP` - Polak-Ribiere-Polyak update, the default and the only one that tolerates generalized search directions</font>
<a name="line1102">1102: </a><font color="#B22222">. `SNES_NCG_HS` - Hestenes-Steifel update</font>
<a name="line1103">1103: </a><font color="#B22222">. `SNES_NCG_DY` - Dai-Yuan update</font>
<a name="line1104">1104: </a><font color="#B22222">- `SNES_NCG_CD` - Conjugate Descent update</font>
<a name="line1106">1106: </a><font color="#B22222"> Options Database Key:</font>
<a name="line1107">1107: </a><font color="#B22222">. -snes_ncg_type<fr,prp,hs,dy,cd> - select type</font>
<a name="line1109">1109: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1111">1111: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESNCG.html">SNESNCG</a>`, `<a href="../manualpages/SNES/SNESNCGSetType.html">SNESNCGSetType</a>()`</font>
<a name="line1112">1112: </a><font color="#B22222">M*/</font>
<a name="line1113">1113: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1114">1114: </a> SNES_NCG_FR = 0,
<a name="line1115">1115: </a> SNES_NCG_PRP = 1,
<a name="line1116">1116: </a> SNES_NCG_HS = 2,
<a name="line1117">1117: </a> SNES_NCG_DY = 3,
<a name="line1118">1118: </a> SNES_NCG_CD = 4
<a name="line1119">1119: </a>} <a href="../manualpages/SNES/SNESNCGType.html">SNESNCGType</a>;
<a name="line1120">1120: </a>PETSC_EXTERN const char *const SNESNCGTypes[];
<a name="line1122">1122: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNCGSetType.html">SNESNCGSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNCGType.html">SNESNCGType</a>)</font></strong>;
<a name="line1124">1124: </a><font color="#B22222">/*MC</font>
<a name="line1125">1125: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESQNScaleType.html">SNESQNScaleType</a> - the scaling type used by `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`</font>
<a name="line1127">1127: </a><font color="#B22222"> Values:</font>
<a name="line1128">1128: </a><font color="#B22222">+ `SNES_QN_SCALE_NONE` - don't scale the problem</font>
<a name="line1129">1129: </a><font color="#B22222">. `SNES_QN_SCALE_SCALAR` - use Shanno scaling</font>
<a name="line1130">1130: </a><font color="#B22222">. `SNES_QN_SCALE_DIAGONAL` - scale with a diagonalized BFGS formula (see Gilbert and Lemarechal 1989), available</font>
<a name="line1131">1131: </a><font color="#B22222">- `SNES_QN_SCALE_JACOBIAN` - scale by solving a linear system coming from the Jacobian you provided with `<a href="../manualpages/SNES/SNESSetJacobian.html">SNESSetJacobian</a>()`</font>
<a name="line1132">1132: </a><font color="#B22222"> computed at the first iteration of `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>` and at ever restart.</font>
<a name="line1134">1134: </a><font color="#B22222"> Options Database Key:</font>
<a name="line1135">1135: </a><font color="#B22222">. -snes_qn_scale_type <diagonal,none,scalar,jacobian> - Scaling type</font>
<a name="line1137">1137: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1139">1139: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`, `<a href="../manualpages/SNES/SNESQNSetScaleType.html">SNESQNSetScaleType</a>()`, `<a href="../manualpages/SNES/SNESQNType.html">SNESQNType</a>`, `<a href="../manualpages/SNES/SNESQNSetType.html">SNESQNSetType</a>()`, `<a href="../manualpages/SNES/SNESQNSetRestartType.html">SNESQNSetRestartType</a>()`, `<a href="../manualpages/SNES/SNESQNRestartType.html">SNESQNRestartType</a>`</font>
<a name="line1140">1140: </a><font color="#B22222">M*/</font>
<a name="line1141">1141: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1142">1142: </a> SNES_QN_SCALE_DEFAULT = 0,
<a name="line1143">1143: </a> SNES_QN_SCALE_NONE = 1,
<a name="line1144">1144: </a> SNES_QN_SCALE_SCALAR = 2,
<a name="line1145">1145: </a> SNES_QN_SCALE_DIAGONAL = 3,
<a name="line1146">1146: </a> SNES_QN_SCALE_JACOBIAN = 4
<a name="line1147">1147: </a>} <a href="../manualpages/SNES/SNESQNScaleType.html">SNESQNScaleType</a>;
<a name="line1148">1148: </a>PETSC_EXTERN const char *const SNESQNScaleTypes[];
<a name="line1150">1150: </a><font color="#B22222">/*MC</font>
<a name="line1151">1151: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESQNRestartType.html">SNESQNRestartType</a> - the restart approached used by `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`</font>
<a name="line1153">1153: </a><font color="#B22222"> Values:</font>
<a name="line1154">1154: </a><font color="#B22222">+ `SNES_QN_RESTART_NONE` - never restart</font>
<a name="line1155">1155: </a><font color="#B22222">. `SNES_QN_RESTART_POWELL` - restart based upon descent criteria</font>
<a name="line1156">1156: </a><font color="#B22222">- `SNES_QN_RESTART_PERIODIC` - restart after a fixed number of iterations</font>
<a name="line1158">1158: </a><font color="#B22222"> Options Database Keys:</font>
<a name="line1159">1159: </a><font color="#B22222">+ -snes_qn_restart_type <powell,periodic,none> - set the restart type</font>
<a name="line1160">1160: </a><font color="#B22222">- -snes_qn_m <m> - sets the number of stored updates and the restart period for periodic</font>
<a name="line1162">1162: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1164">1164: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`, `<a href="../manualpages/SNES/SNESQNSetScaleType.html">SNESQNSetScaleType</a>()`, `<a href="../manualpages/SNES/SNESQNType.html">SNESQNType</a>`, `<a href="../manualpages/SNES/SNESQNSetType.html">SNESQNSetType</a>()`, `<a href="../manualpages/SNES/SNESQNSetRestartType.html">SNESQNSetRestartType</a>()`, `<a href="../manualpages/SNES/SNESQNScaleType.html">SNESQNScaleType</a>`</font>
<a name="line1165">1165: </a><font color="#B22222">M*/</font>
<a name="line1166">1166: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1167">1167: </a> SNES_QN_RESTART_DEFAULT = 0,
<a name="line1168">1168: </a> SNES_QN_RESTART_NONE = 1,
<a name="line1169">1169: </a> SNES_QN_RESTART_POWELL = 2,
<a name="line1170">1170: </a> SNES_QN_RESTART_PERIODIC = 3
<a name="line1171">1171: </a>} <a href="../manualpages/SNES/SNESQNRestartType.html">SNESQNRestartType</a>;
<a name="line1172">1172: </a>PETSC_EXTERN const char *const SNESQNRestartTypes[];
<a name="line1174">1174: </a><font color="#B22222">/*MC</font>
<a name="line1175">1175: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESQNType.html">SNESQNType</a> - the type used by `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`</font>
<a name="line1177">1177: </a><font color="#B22222"> Values:</font>
<a name="line1178">1178: </a><font color="#B22222">+ `SNES_QN_LBFGS` - LBFGS variant</font>
<a name="line1179">1179: </a><font color="#B22222">. `SNES_QN_BROYDEN` - Broyden variant</font>
<a name="line1180">1180: </a><font color="#B22222">- `SNES_QN_BADBROYDEN` - Bad Broyden variant</font>
<a name="line1182">1182: </a><font color="#B22222"> Options Database Key:</font>
<a name="line1183">1183: </a><font color="#B22222">. -snes_qn_type <lbfgs,broyden,badbroyden> - quasi-Newton type</font>
<a name="line1185">1185: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1187">1187: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>, `<a href="../manualpages/SNES/SNESQN.html">SNESQN</a>`, `<a href="../manualpages/SNES/SNESQNSetScaleType.html">SNESQNSetScaleType</a>()`, `<a href="../manualpages/SNES/SNESQNSetType.html">SNESQNSetType</a>()`, `<a href="../manualpages/SNES/SNESQNScaleType.html">SNESQNScaleType</a>`, `<a href="../manualpages/SNES/SNESQNRestartType.html">SNESQNRestartType</a>`, `<a href="../manualpages/SNES/SNESQNSetRestartType.html">SNESQNSetRestartType</a>()`</font>
<a name="line1188">1188: </a><font color="#B22222">M*/</font>
<a name="line1189">1189: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1190">1190: </a> SNES_QN_LBFGS = 0,
<a name="line1191">1191: </a> SNES_QN_BROYDEN = 1,
<a name="line1192">1192: </a> SNES_QN_BADBROYDEN = 2
<a name="line1193">1193: </a>} <a href="../manualpages/SNES/SNESQNType.html">SNESQNType</a>;
<a name="line1194">1194: </a>PETSC_EXTERN const char *const SNESQNTypes[];
<a name="line1196">1196: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESQNSetType.html">SNESQNSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESQNType.html">SNESQNType</a>)</font></strong>;
<a name="line1197">1197: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESQNSetScaleType.html">SNESQNSetScaleType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESQNScaleType.html">SNESQNScaleType</a>)</font></strong>;
<a name="line1198">1198: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESQNSetRestartType.html">SNESQNSetRestartType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESQNRestartType.html">SNESQNRestartType</a>)</font></strong>;
<a name="line1200">1200: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetType.html">SNESNASMGetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCASMType.html">PCASMType</a> *)</font></strong>;
<a name="line1201">1201: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMSetType.html">SNESNASMSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCASMType.html">PCASMType</a>)</font></strong>;
<a name="line1202">1202: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetSubdomains.html">SNESNASMGetSubdomains</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/SNES/SNES.html">SNES</a> *[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a> *[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a> *[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a> *[])</font></strong>;
<a name="line1203">1203: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMSetSubdomains.html">SNESNASMSetSubdomains</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a>[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a>[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a>[], <a href="../manualpages/PetscSF/VecScatter.html">VecScatter</a>[])</font></strong>;
<a name="line1204">1204: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMSetDamping.html">SNESNASMSetDamping</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line1205">1205: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetDamping.html">SNESNASMGetDamping</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line1206">1206: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetSubdomainVecs.html">SNESNASMGetSubdomainVecs</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Vec/Vec.html">Vec</a> *[], <a href="../manualpages/Vec/Vec.html">Vec</a> *[], <a href="../manualpages/Vec/Vec.html">Vec</a> *[], <a href="../manualpages/Vec/Vec.html">Vec</a> *[])</font></strong>;
<a name="line1207">1207: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMSetComputeFinalJacobian.html">SNESNASMSetComputeFinalJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1208">1208: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetSNES.html">SNESNASMGetSNES</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1209">1209: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMGetNumber.html">SNESNASMGetNumber</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line1210">1210: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNASMSetWeight.html">SNESNASMSetWeight</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line1212">1212: </a><font color="#B22222">/*E</font>
<a name="line1213">1213: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESCompositeType.html">SNESCompositeType</a> - Determines how two or more preconditioners are composed with the `<a href="../manualpages/SNES/SNESType.html">SNESType</a>` of `<a href="../manualpages/SNES/SNESCOMPOSITE.html">SNESCOMPOSITE</a>`</font>
<a name="line1215">1215: </a><font color="#B22222"> Values:</font>
<a name="line1216">1216: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_ADDITIVE</a>` - results from application of all preconditioners are added together</font>
<a name="line1217">1217: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_MULTIPLICATIVE</a>` - preconditioners are applied sequentially to the residual freshly</font>
<a name="line1218">1218: </a><font color="#B22222"> computed after the previous preconditioner application</font>
<a name="line1219">1219: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_ADDITIVEOPTIMAL</a>` - uses a linear combination of the solutions obtained with each preconditioner that approximately minimize the function</font>
<a name="line1220">1220: </a><font color="#B22222"> value at the new iteration.</font>
<a name="line1222">1222: </a><font color="#B22222"> Level: beginner</font>
<a name="line1224">1224: </a><font color="#B22222">.seealso: [](sec_pc), `<a href="../manualpages/PC/PCCOMPOSITE.html">PCCOMPOSITE</a>`, `<a href="../manualpages/PC/PCFIELDSPLIT.html">PCFIELDSPLIT</a>`, `<a href="../manualpages/PC/PC.html">PC</a>`, `<a href="../manualpages/PC/PCCompositeSetType.html">PCCompositeSetType</a>()`, `<a href="../manualpages/PC/PCCompositeType.html">PCCompositeType</a>`</font>
<a name="line1225">1225: </a><font color="#B22222">E*/</font>
<a name="line1226">1226: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1227">1227: </a> <a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_ADDITIVE</a>,
<a name="line1228">1228: </a> <a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_MULTIPLICATIVE</a>,
<a name="line1229">1229: </a> <a href="../manualpages/SNES/SNESCompositeType.html">SNES_COMPOSITE_ADDITIVEOPTIMAL</a>
<a name="line1230">1230: </a>} <a href="../manualpages/SNES/SNESCompositeType.html">SNESCompositeType</a>;
<a name="line1231">1231: </a>PETSC_EXTERN const char *const SNESCompositeTypes[];
<a name="line1233">1233: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCompositeSetType.html">SNESCompositeSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESCompositeType.html">SNESCompositeType</a>)</font></strong>;
<a name="line1234">1234: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCompositeAddSNES.html">SNESCompositeAddSNES</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESType.html">SNESType</a>)</font></strong>;
<a name="line1235">1235: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCompositeGetSNES.html">SNESCompositeGetSNES</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1236">1236: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCompositeGetNumber.html">SNESCompositeGetNumber</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line1237">1237: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESCompositeSetDamping.html">SNESCompositeSetDamping</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>)</font></strong>;
<a name="line1239">1239: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESPatchSetDiscretisationInfo(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/DM/DM.html">DM</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> **, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line1240">1240: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESPatchSetComputeOperator(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*func)(<a href="../manualpages/PC/PC.html">PC</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>, <a href="../manualpages/IS/IS.html">IS</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, void *), void *)</font></strong>;
<a name="line1241">1241: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESPatchSetComputeFunction(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*func)(<a href="../manualpages/PC/PC.html">PC</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/IS/IS.html">IS</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, const <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, void *), void *)</font></strong>;
<a name="line1242">1242: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESPatchSetConstructType(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PC/PCPatchConstructType.html">PCPatchConstructType</a>, <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> (*func)(<a href="../manualpages/PC/PC.html">PC</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *, <a href="../manualpages/IS/IS.html">IS</a> **, <a href="../manualpages/IS/IS.html">IS</a> *, void *), void *)</font></strong>;
<a name="line1243">1243: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESPatchSetCellNumbering(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/PetscSection/PetscSection.html">PetscSection</a>)</font></strong>;
<a name="line1245">1245: </a><font color="#B22222">/*E</font>
<a name="line1246">1246: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESFASType.html">SNESFASType</a> - Determines the type of nonlinear multigrid method that is run.</font>
<a name="line1248">1248: </a><font color="#B22222"> Values:</font>
<a name="line1249">1249: </a><font color="#B22222">+ `<a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_MULTIPLICATIVE</a>` (default) - traditional V or W cycle as determined by `<a href="../manualpages/SNESFAS/SNESFASSetCycles.html">SNESFASSetCycles</a>()`</font>
<a name="line1250">1250: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_ADDITIVE</a>` - additive FAS cycle</font>
<a name="line1251">1251: </a><font color="#B22222">. `<a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_FULL</a>` - full FAS cycle</font>
<a name="line1252">1252: </a><font color="#B22222">- `<a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_KASKADE</a>` - Kaskade FAS cycle</font>
<a name="line1254">1254: </a><font color="#B22222"> Level: beginner</font>
<a name="line1256">1256: </a><font color="#B22222">.seealso: [](ch_snes), `<a href="../manualpages/SNESFAS/SNESFAS.html">SNESFAS</a>`, `<a href="../manualpages/PC/PCMGSetType.html">PCMGSetType</a>()`, `<a href="../manualpages/PC/PCMGType.html">PCMGType</a>`</font>
<a name="line1257">1257: </a><font color="#B22222">E*/</font>
<a name="line1258">1258: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1259">1259: </a> <a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_MULTIPLICATIVE</a>,
<a name="line1260">1260: </a> <a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_ADDITIVE</a>,
<a name="line1261">1261: </a> <a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_FULL</a>,
<a name="line1262">1262: </a> <a href="../manualpages/SNES/SNESFASType.html">SNES_FAS_KASKADE</a>
<a name="line1263">1263: </a>} <a href="../manualpages/SNES/SNESFASType.html">SNESFASType</a>;
<a name="line1264">1264: </a>PETSC_EXTERN const char *const SNESFASTypes[];
<a name="line1266">1266: </a><font color="#B22222">/* called on the finest level FAS instance*/</font>
<a name="line1267">1267: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetType.html">SNESFASSetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFASType.html">SNESFASType</a>)</font></strong>;
<a name="line1268">1268: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetType.html">SNESFASGetType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFASType.html">SNESFASType</a> *)</font></strong>;
<a name="line1269">1269: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetLevels.html">SNESFASSetLevels</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Sys/MPI_Comm.html">MPI_Comm</a> *)</font></strong>;
<a name="line1270">1270: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetLevels.html">SNESFASGetLevels</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a> *)</font></strong>;
<a name="line1271">1271: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetCycleSNES.html">SNESFASGetCycleSNES</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1272">1272: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetNumberSmoothUp.html">SNESFASSetNumberSmoothUp</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line1273">1273: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetNumberSmoothDown.html">SNESFASSetNumberSmoothDown</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line1274">1274: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetCycles.html">SNESFASSetCycles</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line1275">1275: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetMonitor.html">SNESFASSetMonitor</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, PetscViewerAndFormat *, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1276">1276: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetLog.html">SNESFASSetLog</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1278">1278: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetGalerkin.html">SNESFASSetGalerkin</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1279">1279: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetGalerkin.html">SNESFASGetGalerkin</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line1280">1280: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGalerkinFunctionDefault.html">SNESFASGalerkinFunctionDefault</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *)</font></strong>;
<a name="line1282">1282: </a><font color="#B22222">/* called on any level -- "Cycle" FAS instance */</font>
<a name="line1283">1283: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetSmoother.html">SNESFASCycleGetSmoother</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1284">1284: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetSmootherUp.html">SNESFASCycleGetSmootherUp</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1285">1285: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetSmootherDown.html">SNESFASCycleGetSmootherDown</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1286">1286: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetCorrection.html">SNESFASCycleGetCorrection</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1287">1287: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetInterpolation.html">SNESFASCycleGetInterpolation</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1288">1288: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetRestriction.html">SNESFASCycleGetRestriction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1289">1289: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetInjection.html">SNESFASCycleGetInjection</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1290">1290: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleGetRScale.html">SNESFASCycleGetRScale</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line1291">1291: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleSetCycles.html">SNESFASCycleSetCycles</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>)</font></strong>;
<a name="line1292">1292: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCycleIsFine.html">SNESFASCycleIsFine</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line1294">1294: </a><font color="#B22222">/* called on the (outer) finest level FAS to set/get parameters on any level instance */</font>
<a name="line1295">1295: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetInterpolation.html">SNESFASSetInterpolation</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>)</font></strong>;
<a name="line1296">1296: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetInterpolation.html">SNESFASGetInterpolation</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1297">1297: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetRestriction.html">SNESFASSetRestriction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>)</font></strong>;
<a name="line1298">1298: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetRestriction.html">SNESFASGetRestriction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1299">1299: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetInjection.html">SNESFASSetInjection</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a>)</font></strong>;
<a name="line1300">1300: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetInjection.html">SNESFASGetInjection</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1301">1301: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetRScale.html">SNESFASSetRScale</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line1302">1302: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> SNESFASGetRScale(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line1303">1303: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASSetContinuation.html">SNESFASSetContinuation</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1305">1305: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetSmoother.html">SNESFASGetSmoother</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1306">1306: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetSmootherUp.html">SNESFASGetSmootherUp</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1307">1307: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetSmootherDown.html">SNESFASGetSmootherDown</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscInt.html">PetscInt</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1308">1308: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASGetCoarseSolve.html">SNESFASGetCoarseSolve</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNES.html">SNES</a> *)</font></strong>;
<a name="line1310">1310: </a><font color="#B22222">/* parameters for full FAS */</font>
<a name="line1311">1311: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASFullSetDownSweep.html">SNESFASFullSetDownSweep</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1312">1312: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASCreateCoarseVec.html">SNESFASCreateCoarseVec</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a> *)</font></strong>;
<a name="line1313">1313: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASRestrict.html">SNESFASRestrict</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line1314">1314: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASFullSetTotal.html">SNESFASFullSetTotal</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a>)</font></strong>;
<a name="line1315">1315: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNESFAS/SNESFASFullGetTotal.html">SNESFASFullGetTotal</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *)</font></strong>;
<a name="line1317">1317: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> DMPlexSetSNESVariableBounds(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/SNES/SNES.html">SNES</a>)</font></strong>;
<a name="line1318">1318: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESCheckDiscretization.html">DMSNESCheckDiscretization</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>[])</font></strong>;
<a name="line1319">1319: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESCheckResidual.html">DMSNESCheckResidual</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line1320">1320: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESCheckJacobian.html">DMSNESCheckJacobian</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a>, <a href="../manualpages/Sys/PetscBool.html">PetscBool</a> *, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line1321">1321: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESCheckFromOptions.html">DMSNESCheckFromOptions</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line1322">1322: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESComputeJacobianAction.html">DMSNESComputeJacobianAction</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *)</font></strong>;
<a name="line1323">1323: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/DMSNESCreateJacobianMF.html">DMSNESCreateJacobianMF</a>(<a href="../manualpages/DM/DM.html">DM</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, void *, <a href="../manualpages/Mat/Mat.html">Mat</a> *)</font></strong>;
<a name="line1325">1325: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonALSetFunction.html">SNESNewtonALSetFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> *, void *ctx)</font></strong>;
<a name="line1326">1326: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonALGetFunction.html">SNESNewtonALGetFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESFunctionFn.html">SNESFunctionFn</a> **, void **ctx)</font></strong>;
<a name="line1327">1327: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonALComputeFunction.html">SNESNewtonALComputeFunction</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>, <a href="../manualpages/Vec/Vec.html">Vec</a>)</font></strong>;
<a name="line1328">1328: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonALGetLoadParameter.html">SNESNewtonALGetLoadParameter</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/Sys/PetscReal.html">PetscReal</a> *)</font></strong>;
<a name="line1330">1330: </a><font color="#B22222">/*MC</font>
<a name="line1331">1331: </a><font color="#B22222"> <a href="../manualpages/SNES/SNESNewtonALCorrectionType.html">SNESNewtonALCorrectionType</a> - the approach used by `<a href="../manualpages/SNES/SNESNEWTONAL.html">SNESNEWTONAL</a>` to determine</font>
<a name="line1332">1332: </a><font color="#B22222"> the correction to the current increment. While the exact correction satisfies</font>
<a name="line1333">1333: </a><font color="#B22222"> the constraint surface at every iteration, it also requires solving a quadratic</font>
<a name="line1334">1334: </a><font color="#B22222"> equation which may not have real roots. Conversely, the normal correction is more</font>
<a name="line1335">1335: </a><font color="#B22222"> efficient and always yields a real correction and is the default.</font>
<a name="line1337">1337: </a><font color="#B22222"> Values:</font>
<a name="line1338">1338: </a><font color="#B22222">+ `SNES_NEWTONAL_CORRECTION_EXACT` - choose the correction which exactly satisfies the constraint</font>
<a name="line1339">1339: </a><font color="#B22222">- `SNES_NEWTONAL_CORRECTION_NORMAL` - choose the correction in the updated normal hyper-surface to the constraint surface</font>
<a name="line1341">1341: </a><font color="#B22222"> Options Database Key:</font>
<a name="line1342">1342: </a><font color="#B22222">. -snes_newtonal_correction_type <exact> - select type from <exact,normal></font>
<a name="line1344">1344: </a><font color="#B22222"> Level: intermediate</font>
<a name="line1346">1346: </a><font color="#B22222">.seealso: `<a href="../manualpages/SNES/SNES.html">SNES</a>`, `<a href="../manualpages/SNES/SNESNEWTONAL.html">SNESNEWTONAL</a>`, `<a href="../manualpages/SNES/SNESNewtonALSetCorrectionType.html">SNESNewtonALSetCorrectionType</a>()`</font>
<a name="line1347">1347: </a><font color="#B22222">M*/</font>
<a name="line1348">1348: </a><font color="#4169E1">typedef</font> <font color="#4169E1">enum</font> {
<a name="line1349">1349: </a> SNES_NEWTONAL_CORRECTION_EXACT = 0,
<a name="line1350">1350: </a> SNES_NEWTONAL_CORRECTION_NORMAL = 1,
<a name="line1351">1351: </a>} <a href="../manualpages/SNES/SNESNewtonALCorrectionType.html">SNESNewtonALCorrectionType</a>;
<a name="line1352">1352: </a>PETSC_EXTERN const char *const SNESNewtonALCorrectionTypes[];
<a name="line1354">1354: </a><strong><font color="#4169E1">PETSC_EXTERN <a href="../manualpages/Sys/PetscErrorCode.html">PetscErrorCode</a> <a href="../manualpages/SNES/SNESNewtonALSetCorrectionType.html">SNESNewtonALSetCorrectionType</a>(<a href="../manualpages/SNES/SNES.html">SNES</a>, <a href="../manualpages/SNES/SNESNewtonALCorrectionType.html">SNESNewtonALCorrectionType</a>)</font></strong>;
</pre>
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